Have you had a chance to test the 75rd 7.62x39 drum designed for the AR platform? I love the idea, but I don't have confidence in the purchase yet. Given the current value of my dollar, the juice must be worth the squeeze. Thank you for your time and efforts sir.
It's nice that you came out with this video. I made one in 2017 and "blew tub" dumped it. Anyway, I then covered all the shortcomings: mag failures to feed, lite strikes from short firing pins, extraction issues & stovepipes and breaking bolts/extractors. Your suggestions are what I did back then, as well as I use WMD NiBX coated 9310 bolts. With steel ammo, I've had great luck and currently over 4,000 rounds with no failure. Good job on your video. Just to mention you wrote 9130 steel BC, I think you meant 9310. Also, all my BCs are melonited as well..
Biggest problem I had was getting enough gas to the bolt, gas hole in barrel had to be opened up, extractors are a service item. C products are the most reliable mags, 28 rounders are the best. 5.56 firing pins are generally not reliable. Built 3 rifles, bought 2 (bca). Redex bolts are in my experience very well made.
Wow! I never imagined that this video would get half the amount of attention that it's gotten, thank you! I made this as a helpful guide, since I was answering people's same questions on Reddit and Facebook with their builds. I'm really glad you guys are finding this helpful. Is there anything else you'd like me to cover or go over in more detail, or any additional videos I can make? Thanks all! -Average Man
It's a kinda fascinating topic, really. Building one of these scratches a lot of educational itches when you try to get one working right. Also, contrary to some moderately popular TH-camrs like VSO Gun Channel and Hoplifeil, there's a lot of merit to owning one of these and a actually running it if you can fit one in your budget. 7.62x39 in an AR will teach you recoil management faster than 5.56 in a similar configured AR, especially if you have a Trijicon TA31 on it. It'll teach you drop and wind compensation at shorter available ranges. It's arguable 300BO will as well, but there's a whole host of arguments against that idea from a training perspective, but mostly cost per round. It'll teach you maintenance and expectation management, cuz if you think about it a lot of us will go through periods of life where we just can't get the range time we want so we need that compressed education.
Great vid. So tired of schooling people.I do recommend flatwire buffer spring(seems to smooth action even more)I run laurue trigs on all my x39s.Thanks again
You can totally change the name of this video to ‘The Comprehensive AR-47 Guide’. Extremely above average video, and thanks so much for taking the time to make this.
Best presentation video done on this subject I've seen over the years period. "I don't always hit that subscribe button, but when I do, it's for ARx39 how-to videos"..... Quoted from nobody...
Great Video!!! I built my AR-47 years ago, and it's never jammed, and it's really accurate. I use Duramag ( C Products) Mags. It's one of my favorite Firearms to shoot.
Same. I've always loved the x39 round. Coupling that with the manual of arms and the ergonomics of the AR platform is so satisfying.. Thanks for watching!
I took the o-ring out of my extractor for 6.5 grendel to get more travel over the rim of the case. This might help other rifles or longevity of extractor, but will probably need to replace spring sooner.
Awesome video man! Love the cardboard diagram. The AR-47 gets a lot of hate but I love mine! I think mag choice is probably the biggest factor. Duramag for the win.
For my AR-47s the key was an H2 buffer and Sprinco Hot White spring. Smoothed the operation right out. Steel issues are almost always cheap barrels. Had a number of feed and extraction issues early on. Cleaned and oiled rigorously and after 100 rounds it smoothed out and runs great. When I rebuilt with a Diamondback barrel, no issues with any rounds from day one.
I'm working on my own video to document my foray into 7.62x39 builds. One thing I've learned can have a dramatic impact on bolt longevity is the overkill demolition of the six-o-clock lug in the extension to create one big feed ramp. Sanders Armory 16" barrel. Came this way. Snapped a lug on my first bolt at around 950 rounds. From the perspective of from behind the bolt and into the barrel it was the lug next to the extractor closest three-o-clock. Replaced bolt, then at around 300 rounds (all Belom) I NO-GO gauged it and found it was positive headspace. Looking at the bolt the same position lug was bent noticeable inward. Changed bolt again. Now, only 4 rounds in, what's left of the two lugs next to the absent six-o-clock lug look like they're peeling back and catching the brass and bending the cartridge at the neck. I consider my Sanders barrel now scuttled because of this. My 18inch KAK w/ Midlength gas system... runs like a champ out of the box. Not a heavy barrel but groups certainly well enough. Even works with ASC mags and yet the feed ramps look very normal. Not necessarily 5.56 M4 ramps but, tastefully adjusted and not butchered. Oh and I did not notice the oddity that is my sanders barrel extension until I bought and looked at the KAK barrel, then it all made sense. I read some adjust their feed ramps but never thought to this extent. My 16" Radical upper (impulse buy at a serious discount). This thing is an all-round problem child. Belom and also Sellier and Bellot bullets are literally too fat at the ogive to fit cuz I think they machined the throat on the barrel too short. I verified that I can slip a spent Belom brass into the chamber and it drops in farther than a new cartridge will. Barnaul runs fine but Barnaul is hard on ARs not just because of the steel case but they're one of the consistently hotter rounds out there and you really feel it. I reserve my Barnaul for my PTR; that thing eats it up.
@@SammyTheSidePiece Primary Arms end of December, 2022. Was on sale for $229.99 then I also had a %12 off coupon and got it down to $203. Got a Primary Arms optic same order, took off the shipping so it was impossible to pass on. Just really wanted to try it out, see if it was worth the hype.
@@411DL yea man we got a Radical x39 from classic firearms a couple of weeks ago, on sale for 440$ and It looks and feels really nice. So far we got a Tubbs flat wire spring to reduce harmonic vibration and be forgiven on the BCG. The next upgrade is gonna be an adjustable gas block because I need as reliable as possible. I was asking when u got yours because I'm thinking when Radical first started making them maybe that was the trial and error period then after making them for some time, they made them better. Hopefully anyways lol
@@411DL oohh, yea we got the whole rifle man. Classic firearms is definitely the place to shop because they have really good quality stuff and the offer a lifetime warranty for a few more dollars at check out.
I know this video is a year old, though I wanted to chime in with my experience. I have been building AR-47s since the barrels have been available. I have learned a lot and even used one in the rifle classes I taught. If you buy a Bear creek, don't get the side charger. Why? Because you want a entirely different BCG in it from black rifle arms. You can only replace the bolt when you go with the side charger. I actually had over 20k rounds on a BCA 7.62x39 upper with a full BRA bolt carrier in it. The Bear Creek extractor broke after 300 rounds and the bolt face blew at 650. They were very quick in replacing the part, but I decided to upgrade them instead. The enhanced firing pin BCA uses is still very brittle and they break anywhere from 10-200 rounds. At one point bear creek gave everyone 2-3 extra because of all the issues they had with them breaking. The bear creek barrel was excellent and the only reason I replaced it after 20+k rounds was because the rifling was almost gone. It would still hold 4-6 inch groups at 100 but I really got my money from it and it was time to replace it. At that time bear creek barrels were extremely cheap, I think it was like 55$ so I ordered another one. I didn't even ask them to replace it but I am sure they would have. Now the BCA barrels are 100$ or more and you could easily get a Faxxon from Right to bear for about the same price. The Right to bear branded stuff is either aero, bear creek, or ballistic advantage rebranded stuff. I find nothing wrong with buying a bear creek 7.63x39 but if you do, account for the added expense of the black rifle arms complete bolt carrier group with firing pin. With that added, you are equal to the price of a PSA with much better reliability because of the Black rifle arms upgrades.
BRA bolt carriers work excellent. I have all the different mags. Clearance and polish the mags and lube the springs with dry lube. Extended firing pin. Comes in BRA bolt carrier. Polished mil spec trigger with standard springs has fired everything so far. Correct buffer spring and weight. Polished feed ramps. Runs reliable. Great deer caliber. More accurate than any AK I've shot with steel ammo. Mostly use brass but has run all the steel case I've tried. 100 yards 1.5" groups with Tula 154 gr. Sp
I bought a BCA 7.62x39 upper years ago when Obama wanted to ban M855 and 5.56 prices went crazy. I saved my 5.56 and decided to shoot some of my cheaper Russian steel case 7.62x39 ammo I stockpiled for my AK/SKS. I did end up having to replace my hammer spring with a heavier hammer spring and replacing the firing pin with an enhanced firing pin for mine to shoot Russian steel case more reliably. I still had issues igniting Golden Tiger, but I just save that for my AK and SKS. On my bolt, I replaced the bolt with a Young Manufacturing heavy duty bolt with heavy duty extractor. I also prefer the 20rd Duramags. So far it's been reliable enough for range use, and I wouldn't be afraid to use it for defense if I had to.
Isn't it amazing how the anti-2A crowd get us to spend more money than we ever thought we should? I don't think the boomers were kidding when they said the best firearms salesmen are the very same people that want to ban them.
Mine had just broke the extractor after about 3,700 rounds with a toolcraft bcg. I run superlative arms gas block and a 1.77oz buffer with standard carbine spring. Perfect ejection pattern and consistent with either 46gr Czech surplus up to 154gr Tula. Best luck I’ve had with mags is Ross defense unimags, unfortunately no longer get them. But great breakdown of the parts very detailed, everything you covered is correct for longevity of the parts sad it took someone so long to make a good video covering all of this. Oh forgot to mention redxarms is gtg I got a lot of my spare parts from them.
Thank you for making this video. I've been through most of these issues and have done these upgrades already. But it's good to have a tutorial for the newbie's. I keep a complete entranced BCG on hand when I shoot my AR47. If I break an extractor, I can just slap in the other BCG and replace the broken extractor at home. The adjustable gas block was my last upgrade.
Awesome, glad I could help! Yep, we've all been there and these builds are surely trial and error. That's probably the best resolution at the range-a broken extractor is easy to replace in 5 minutes, but even easier is to just pop in your "on deck" bolt carrier group and just replace the extractor at home while you keep chugging away at the range!
With regards to the ejection pattern. Your ejector spring can vary where it throws brass also. You will notice a different bolt with a stronger or weaker spring will change your ejection pattern drastically. Which can skew your results.
I've had good luck also with my Wyndham weaponry 762×39 SRC m4 carbine had a little trouble at first with the gas tube had to change it out also got enhanced firing pin and upgraded the hammer spring and it has ran like a sewing machine
That's all good and dandy FOR BRASS AMMO, but if you're shooting steel cased ammo, you're going to need an enhanced hammer spring to go with the enhanced firing pin to eliminate those light primer strikes. I was getting 5 to 6 light primer strikes for every 30 rounds fired. I got the "Wolff AR-15 Extra Hammer Spring WS-30093". My AR-47 goes "bang" every time now! Also, don't buy the enhanced firing pin from Bear Creek Arsenal, it is crap (several other comments say the same thing about it). Mine broke on the very first shot. Lucky for me the manager at Range USA let me go home and get my extra enhanced firing pin from Windham Weaponry so I could come back and continue shooting. With both my enhanced firing pin and the enhanced hammer spring it eliminated the light primer strikes. I shot my AR-47 70 times that day to test and it worked. Have not had any trouble since.
Currently optimizing my AR's for steel. Last range trip I shot 80 rounds of lacquered steel and had 2 failure to feeds. I've since polished my feed ramps with Flitz, hoping that resolves the issue. Thanks for watching!
Great useful content. Lazy old woods loafer here. My state has no magazine limits for big or small game. For tactically holding down a stump, boulder, or log with my tactical backside, I love the duramag ten rounders . If there is a chance of a sounder the twenty is my choice. Just too lazy to carry 27-30 rounds on the rifle. I rolled the dice and went with a trybe defense upper. Did not want to test my toddler like mechanical skills building an upper for this caliber. The 30/30 and 7.62x39 are time honored blue collar freezer fillers in Appalachia. Now it is becoming more approachable for us poors. This is a great video to deal with any issues and for tuning.
I did both those and installed the nitride covered bolt pin so it will move smoother. When I ordered 1 for my radical 762 I decided to order 3 total and stick the other 2 in my 556 ars since it was cheap enough.
Just got me a barreled (no BCG and charging handle, for those who don't know) 7.62 x 39 upper by Radical Firearms and gonna build on top of an Aero Precision lower. This video is a godsend because I haven't bought a lot of the major parts yet. This is gonna save me a lot of trouble and money! I appreciate the info and I learned about how to tell if a rifle is overgassed or not! (Seriously, I was just shopping and doing research when this video randomly popped up in my feed!) Thank you!
@@ExtremelyAverageMan Appreciate the offer and I might just need the help! I have built an AR15 in the past; a really nice CMMG Resolute in 5.7 x 28 in Flat Dark Earth (it looks sexy with an FDE stock and grip with a black lower and buffer tube [the lines are gorgeous]). It's a sweet little shooter with no recoil at all. Time to add to my rifle building repertoire!
Make sure You're feed ramps are polished smooth... You're hammer spring is heavy for steel case Russian primers, and You're running an enhanced firing pin 😉
Phosphate will certainly last longer when firing but nitride is smoother and far more rust resistant while being a little more brittle than phosphate. Phosphate will last longer under firing while nitride will last longer when unused and it won't require as much lube to run as phosphate will.
Thank you for your efforts in making this excellent video. I have a Radical Arms AR-47 that runs reliably well now after incorporating many of your suggestions. And I've referred back to the video on many occasions.
Great video! Simple straightforward and easy to understand! I recently purchased a 7.5” 7.62 upper from BCA… lots of issues… Which your video addressed! Broken firing pin 100 rds… Loose Gas Block 150 rds… Which caused failure to cycle…. Several failure to extracts… Next 200 rds… Sent it in as a warranty replacement… Second upper… Immediately replaced Firing Pin… No light strikes but… Consistent failure to extracts!!! Grrrrrrr!😬 I love this upper… and so does my Marine son…! Your video answered and addressed all my concerns and questions! The BCA upper cost 1/4 of what my son paid re-creating his Service Weapon in 5.56… Bravo Company upper… PSA lower with a $300 Trigger and ACOG sight…😁 He still loves the Dirty Little 7.5” 7.62 upper! I just need it to run …RELIABLY! And yes… We are running Bardaul steel case through it… It kicks with a muzzle flash in excess of 3-4 feet! But that’s the whole point! Thank you for your incredible video! Keep up the great work! Definitely earned a subscriber!😉
@hankbirmingham6662 Bear Creek Arsenal's got a lot of issues that I presume can be corrected with patience and money. The oversized gas ports will put too much pressure on the BCG and I also hear that their extractors are made out of cast steel rather than forged. Take the part about the BCC with a grain of salt but if you're consistently having issues I would replace the extractor BCA gives you with one from a reputable company and I'd also get an adjustable gas block and/or replace the barrel that has the appropriate gas block dimensions. I do hope this will fix your problems.
Bro! Your video was EXCELLENT!!! Quite possibly the most clear, concise, honest, thurough and organized presentation i have ever seen on any topic. I had no idea i needed a 7.62x39 upper, but, after watching your video, it not only makes logical sense (ammo cost, 30 caliber option) to build one, but i don't have any apprehension as to where to start or what to do! You have simply removed any fear or hesitation that i would ordinarily have if someone told me i should go and do something i've never done before. You seem to have a gift for teaching and communicating with unusual clarity. Thank you!
I bought my first AR47 back in 2007. It was a Armalite. In their owners manual it said not to run steel case. Other wise it would void the warranty. So I all ways stuck with brass cased ammo. (I reload now.) I also make sure the gas system is working perfectly. The ejection is at three o’clock. Never broke a extractor or bolt. Built two more AR47 rifles and bought a BCA at Christmas. I use heat resistance blue loctite on the gas block set screws and handguard screws. The bolts for the handguard thread into the barrel nut. They can get pretty hot. And standard blue loctite is not a good choice. On one of my builds I used a cheap adjustable gas block. After two times out to the range. I could tell that the adjustment screws were seizing up from carbon. Read on another forum that a guy used aluminum based anti seize on his adjustment screws. After two thousand rounds they still move freely. (Anti seize is good up to 1600 degrees.)
Thorough. I've seen so many questions posted over the years and this answers pretty much everything. Mine are 1.Radical 16" carbine gas with A2 stock/rifle buffer, tubbs 308 flatwire spring, MBT2, lpvo 2.BCA 10.5 carbine gas with H2, damage ind cs carbine spring, Spikes battle trigger, cheap adjustable gas block, mini PA rds. They're basically both spare parts bin hobby guns but they have the components you covered and work. Definitely 20, 28 duramags.
Great Video I enjoyed it. I was impressed with accuracy of 7.62x39 out of an AR. There are adjustable buffer weight kits for about the same cost of a buffer weight. I ended up going with a fixed A1 stock, recoil is much smoother. I need to check out an adjustable gas block.
Two more things to talk about regarding AR-47s. 1>Taking out the firing pin and chucking it up in a drill to face off the end travel with a metal file for light strikes. 2>Marking your AR look alike with a visible ranger band so you don't accidentally put an AR-15 magazine into you AR-47 rifle.
You defiantly have a new subscriber. Great video with great information.I made the Switch over to 7.62x39 a year ago and got all the kinks worked out. You definitely have to do your research before switching over and building a AR-47 platform. It can be a pain at first, but once you get it fine tune it runs smooth as butter. Belom brass is the way to go. I've drop plenty of hogs with those rounds.
Thanks bud! Yeah, I feel it's that much more rewarding once you go through the trial by fire and get your gun running smoothly. Makes you appreciate the rifle more!
Awesome video just subbed! I have narrowed down my x39 barrels to diamondback firearms with zero issues running steel and all BCG’s are BRA period! I have not run Faxon but do have some of there bolts as the specs on them are impressive, superlative arms adjustable Gasblocks ar 100% and if you run suppressed it’s the key to keep it running smooth. For subsonic loads 196 brown bear you have to enlarge gas port to 2.80mm with h2 buffer has been 100% for me consistently. If the gun will mot run reliably on steel case then I would find the problem and change it out just saying, I own the new sig LT and Pws x39 guns which are hands down 100% but enjoy my home build x39 uppers and have now got the years of trial and error down to a reliable platform! I encourage anyone that wants a x39 AR platform to spend that extra $$ to begin with so they don’t get disappointed first thing. One of my PWS guns has over 7,000 +\- rounds and only been cleaned twice, sig is still getting rounds but be awhile before that round count get there.
Thanks man! Yeah I'm trying to help people here by getting them to run good initially...although I wouldn't have learned half as much if I didn't have issues along the way haha. Yeah I need to narrow steel issue down. At the time I was getting stuck cases with Tula, but I do have some lacquered steel at the moment...maybe I'll give it a go next range trip. Thanks for the sub and for watching!
EAM, I will recommend Wyndham Arms Enhanced Firing Pin (A Premier Manufacturer!) Longest ones and clearly best made ones that I have purchased, Light strikes are a problem with the amount of strike, or really length on your steel ammo being your reason of F.T.Fire! And this actual is the reason we buy these enhanced pins! Also Wyndham pins don't break like those from your rifle company! I tried the stuff from BCA, and it's basically junk, or everything I have seen is very poorly machined and prone to fail! I did the math on this, and your hammer strike isn't usually the major problem. It is how much protrusion past the bolt face!!! I now get 100% reliability with Steel cases, or my brass, or reloads now! Another buffer you can try is a JPS Silent Buffer system! Way more money of course But love the lack of spring noises from the stock!
Awesome video, Average Man! I don't have an AR-47 nor do I plan to in the short term, but this is an excellent video on how to make it reliable. And I love the cardboard diagramming!
I love my AR-47! Built on an 80% lower and a Stoner complete upper from Midway for about $700 including buffer system and furniture. I use ASC sheet metal mags for the fatter cartridge. I had a couple FF jams at first, but then I polished the feed ramp with a dremel tool and it's been flawless ever since. I think I sanded down the feed pedals on the mags to make them smoother too.
J&p hammer spring, excellent and made a regular mil spec hammer nearly as nice as an expensive timney. About 4 lb pull. Right to bear enhanced firing pin seems to be doing the trick with wolf steel case. The feed ramps, this is a big deal, don't over look it. Regular m4 are not the best for this. BCA runs basically an enhanced feed ramp vs the standard 5.56 m4. I run both Duramag and ASC mags. No issues
I know I am a little late to the comment section here, but this video is outstanding. I wished it was around years ago when I was trying to figure out how to build a reliable “AR47.” I will tell you after building many of these rifles that my best experience with BCG’s has been with the Fail Zero nickel boron. They are pricey, but have proven to be the most reliable BCG I have ever used in this platform. I would consider them second to none in performance and reliability not to mention they are worth their weight in gold when it comes to the reduction in frustration that comes with extractors and firing pin failures. Thank you for the very informative video, it is very obvious that you have an exceptional level of experience with this platform as you massed your information exactly where the problems lie with the “AR47.”
After around a year my AR47 runs well. Replaced my Firing Pin with an "Enhanced Bear Creek" in SS. So I have an extra. I only used Brass so not an issue. Will be purchasing Extra parts and things. My x39 is a standard rear and my 5.56 is my side charge. So backwards. But I'm going to be purchasing a different upper in x39. Thanks for the info. Great video. Will check my gas system and recheck my weight in my buffer on both builds. Not my first rodeo, but I only run around 3-5 hundred rounds a year as I can't afford it. I live on SS. Again thanks
I've built two 7.62.39 uppers and the only issue I had was on the one I tried a cassette style trigger and just had way to many light primer strikes...I just use mil spec style triggers and springs in nickel boron and I will use what I call a take up screw in my pistol grip screw hole to take the creep out of the trigger and I've found C- products and ASC mags work the best.
I just picked up a right to bear 762x39 complete bolt carrier group for 99$ this week. Long story short. I had an extra lower I wasn't using. Last weekend I went to my local gun store and I found a complete 762x39 upper assembly with charging handle. So I paid 250$ for it and ordered that bolt carrier group from RTBA . I put everything together last night and I plan on going to the range tomorrow morning. The lower I'm running is palmetto state. The upper is a brand I'm not familiar with. Hopefully all goes well. I enjoyed your video
I upgrade all of my extractors to phosphate microbest extractors. The phosphate coating helps grab the brass and hang on until it leaves the ejection port. Slick surfaces like nitride or NiB are not ideal for extractor coatings because they have a tendency to slip.
I’ve been running x39 AR’s for a few years now with no issues, an 18” mid gas and 16” carbine gas. My setups have A5 buffer systems, adjustable gas blocks, and Young Manufacturing bolts. The A5 system is comparable to a rifle length buffer system which help slows the carrier which reduces wear on the bolt. The adjustable gas block helps fine tune the gas that cycles the carrier which also helps with wear. The most important is the Young Manufacturing 7.62x39 bolt. The bolt has a thicker wall and extractor than most/all x39 bolts on the market. Young Manufacturing was bought out by KE arms in 2021. They still sell the bolt but for whatever reason don’t have the description on the bolt specs on the website.
That's good to hear about the Young Manufacturing Bolt, I caught wind of it soon after this video of course, after FocusTripp put out his vid on it too. Looks like a better option for longevity
@@ExtremelyAverageManI’ve had mine for quite a while now and it’s held up so far. Granted I haven’t put thousands of rounds through my rifles but with the hundreds I’ve put through I haven’t had any issues. I got my bolts before KE arms acquired Young Manufacturing in 2021. Seen a vid of a guy who had bolt carriers from before and after and the latter carrier was out of spec. Then they ended up sending him another out of spec carrier after he returned the first. So I’m not sure about the QC of Young Manufacturing at this time
@@blaksabbath9108Perhaps that's why the new management removed the bolt specs but that's just speculation on my part. Damn shame if that's the case though.
I Also Added A Wolff Extra Power Hammer Spring From Brownells To Mine Many Years Ago And My Build Has Run Flawlessly To Date! You Can Also Install A Competition Muzzle Break To Control The recoil With A Standard Buffer Spring! I've Built Quit A Few AR-47's Over The Years For Myself, Friends And Family Members & Everyone Of Them Are Still Running Flawlessly After Many Years Of Continuous Use! Thanks For The Video!
Hey I appreciate your video man! I've been looking into this type of rifle to prepare for hunting next year and this video has ALL the information I needed, keep doing what you do 💯
Here's a brain block. I sure could use some help with fellow shooters. A little background on me and my equipment. I would consider myself well informed and experienced with the AR pattern rifle and other firearms in general.I have built over a dozen ARs and hand built 3 1911s. 5 of these 762x39, 3 for my safe and two others for family. So, please NO did you clean your rifle, make sure your magazine is fully seated, or look for trash in your chamber comments. Also everything in this video I have done in enhancments already. My first 7.62 x 39 is a 16-inch rifle. In the first thousand rounds it was very reliable, had one stuck case and broke the claw off the extractor around 800 rounds. Replaced it and shot up to around 1600 - 2000 rounds and it broke again. After that, I replaced it with 3 different extractors and swapped out to a new bolt carier, and bolt. For some reason it won't exrtract the case from the chamber reliably. Prior to this I was able to use all my Duramags, and ASC mags without issue. Replaced the spring and Viton gasket in the bolt, tried cycling it with and without a combination of those. H2 buffer and carbine spring hs no change and in spec. Even noticed when hand cycling the rifle sometimes its not stripping a round out of the magazine as well. I just don't get how it goes to running really well to what it's doing now. So for those that might know where to point me, I'd be grateful.
I would check the alignment of the gas block to the barrel gas port next. It may have "shifted" over time and happens more often than you would imagine. A dimple in the barrel (not all barrels have them) and some blue Loctite (not everybody uses it) will keep it in place.
Yea it definitely sounds like the gas block, the gas tube or depending on what kind of bcg u replaced, the gas key could be out of spec or an adjustable key that needs to be properly tuned. just to be safe I would get an adjustable gas block from Superlative arms and a new all steel non coated gas tube an then make sure the gas key is functional.
I have made two AR47 builds as well, and I've gone perhaps a little overboard on them both, guts-wise. First, a BCA side-charge upper receiver holding onto a 16" Faxon mid-length gunner barrel, adjustable gas block, and Kaw Valley 5.4oz (H3) buffer. Second build is based on a standard top-charging upper with a KAK bolt, KAK 16" carbine length nitride barrel, but I had a bunch of spare parts lying around so I used an Adams micro piston for the operating system. Also using a Kaw Valley 5.4oz tungsten. Both builds use the BCA enhanced pin and Witt Machine SME muzzle device. I was worried at first that cheap 7.62 wouldn't work with higher end drop-in triggers but... they do! So I've got a CMC drop-in on both of em. I got a bunch of extra extractors just to be sure, but they are actually so much fun to shoot that I've started buying Sellier & Bellot FMJ brass rounds in bulk. They're not cheap, but they ARE fun enough to make it worth it!
Wow.... spoken like an average guy! Sub'd. I built my first AR-47 about 8 years ago and have run into most of the common "issues". I solved my issues with a credit card, a lot of range time, and a lot of part swapping. It really does boil down to the 4 points you highlighted. PS, I have a couple of "Right To Bear" barrels, I find them to be pretty darn good for the price, they ship quickly and have been great to deal with.
If I didn't have a Norinco mak-90 I would totally do an upper in this caliber. I got that rifle in 1999 for a cheap price plus I got a bunch of $2 a box Wolf Ammo much of which I still have. I do have a Grendel that I made and it has the same diameter and shape case as 7.62X39. I've made it as a precision rifle so I don't think it's going to have a super long round count anyway. This would make a cool opportunity for someone who doesn't have an AK. The round is really quite excellent and a very good penetrator. It will go right through a cinder block and break it in two easy. One thing I like about my AK is that it doesn't just accept steel case ammo, it is actually better to shoot steel case through your AK. I don't know how they were able to take the AK and make it where it performs better with steel case than brass. I would not have this AR upper if it can't comfortably handle steel case. This is a major part the 7.62X39 world. Might as well do 300 Blackout if you can't handle steelcase in 7.62X39..
Currently resolving this. I ran 80 rounds of lacquered steel through last range trip and had 2 failure to feeds, but otherwise ran fine. I've since polished my feed ramps with Flitz, hoping it resolves the issue. Thanks for sharing!
Depends on who you ask about these x39ers. A self claimed expert told my friend that an enhanced pin can penetrate the primer of a round. Causing a💥 in the wrong direction. My friend also heard that using brass in an ak can cause the same ordeal. It was described to my friend as a nightmare to clean the brass out of the bore.
I have never heard of that happening. Wouldn't matter anyway, a pierced primer is a pierced primer. It's not like the "enhanced" pin makes it explode more haha, it just ensures that it indeed does pierce the primers of the steel cased stuff, which generally have tougher primers.
Found the link to ur video on Reddit! I was thinking about doing a 7.62x39 build. Phenomenal video boss. You’re super helpful in laying out all the details and problems that occur. I had similar problems with my 6.5 Grendel so I think I’d be in a similar playing field of problems with 7.62x39. Keep making awesome content. I look forward to more videos.
I agree with many if not most of your recommendations. One thing I recommend for over gas issues is to start with the adjustable gas block then go to increasing buffer weight as needed. It is best to limit the amount of gas going into the BCG to avoid excess fouling and gas in your face. My rifle still has the carbine buffer and ejects where it should after adjusting the gas block. But I may try a heavier buffer just to see if there is something I am missing! Thanks for the video.
My daughter loves to shoot AR’s and I relish time spent with her. She shoots her husband’s, but wants to call one her own. Melts my heart. I ordered a Moriarti arms 16” kit 7.62x39 fourth of July sale (Go America!) watched this video four times and took detailed notes. (She wanted a rifle to have fun with, yet reliably harvest deer and hogs.) I then read every comment and took even more notes. As you stated, you wanted to present a detailed blueprint on how to get it right the FIRST TIME. Can’t wait to spend time building this WITH HER and am confident that this dad has the ability to do it right. THANK YOU MY MAN!!!!
Main issue I had with mine were feeding issues at the ramp, a bunch of stovepipe, log jams etc or shell completely stuck. Refit my gas block and smoothed out/ widened feed ramp. It works like a machine now, my favorite gun to shoot and cheap ammo. And yes it is a heavy Barrel! But very accurate
One thing I noticed building these uppers is that some barrel manufactures will sell you a 7.62x39 chambered barrel with 223 extension ramps not 30 cal ramps. BCA at least has 30 cal feed ramps on the barrel extension. Not sure if this was covered in the video
can confirm about the duramag, have a pair of 10 rounders, accidently ran one through the washer & dryer, still works even with a minor ding to the feed lip and some loss of the paint
I also have the KAK "enhanced" BCG the first was a Stoner and it ate itself, but about 100rds in with flip up irons im ejecting about 2:30 to 4:30, but i need more time on it
Extremely Average Man, but Extremely High-end Information. I just ordered my first 7.62x39 AR and your video answered me like thousand question! Absolutely stellar! Thank you!!!
Just finished my build,. So far only 100 rounds thru it, but it ran Flawless. One hiccup was a Failure to feed. That was a Magazine problem. ASC 5 ends. {I still use them, Its all I have now} Rectified that. Love it !. Much better than the Half dozen 5.56 and .300 Blk out's I've built. But I will buy a 5.56 upper to play with. Why not ,right? Anyhow, Navy "75-81". Thanks for the Video. Big info
Superlative Arms gas block is adjustable with a bleed off valve so you can fine tune the amount of gas that goes into the bcg and sends the rest of the gas away from our pretty faces lol
Great video! I’ve had a 16, 10.5, & 7.5 from BCA. Only have the 16 now. The pistols were unreliable. It started as a Gen 1 side charger and I could not stand that little screw. It kept coming loose. I’ve changed it to a rear charging receiver to rid my self of the headache. It’s funny, I’ve never had issues with ejection. Although I did make a few changes before I even shot it. I swapped the buffer to H2 and have had the heavier trigger spring and enhanced firing pin. So I guess those changes made all the difference. Along with C products mags, I think that info was out there but I definitely had to look everywhere for them. You have them here all in one place. Wish I had this video when I first started. Great video.
No problem! I had to do the same as well, a LOT of reading through forums and various random videos and reddit threads to try and find good advice/answers/remedies to the issues we encounter. My intention was to put it all in one place for people, so thank you very much! Yup, sounded like you did very good on your AR-47 solutions. I have the gen 2 side charge on both of those builds you see which mitigated that charging handle bolt coming loose (blue loctite not needed thankfully!)
Thank you for this video. I went with the Radical Firearms AR-15 chambered in 7.62x39 and I know that I have to upgrade parts and this video gives me great insight 👍🏽
Since I've made this video, I've only heard great things about Radical Firearms, sounds like a great choice! Give us a status update after a bit of time with it!
Many claim this can’t be done. Typically by those who don’t understand fine tuning an AR15 or how to find actual root causes of failures. I have built several. From 7.5-16.. The 7.5 was the hardest to get running and running reliably. All run steel case. Keep a spare extractor and use dura mags.
VERY FUN Gun to shoot, but just not reliable enough for me! I built one w/ 20" Bull Barrel for long range accuracy w/ lower cost ammo but unfortunately am not a fan of MY FYI BUILD! Not happy with stoppages needed to clear out a no shot rounds. This is a deal breaker for me at the range so it WILL NOT stay as-is in my collection. Granted, my DYI build may have not been done correctly! However, I will no longer chase this rabbit down the hole to better understand how to fix my issues. AR-15's were designed for .223/5.56 ammo and should only be refined for this ammo in my opinion! God's speed to you wonderful DYI folks who enjoy chasing this option and make it work! I however will stick with 5.56 in the AR platform and consider purchasing something else designed for this 7.62 caliber. God Bless and stay engaged in our 2A passion!
Feed ramps is a big thing. Unless your are buying a completely pre-built upper. If your are building your upper from the ground upper your going to have to smooth the feedramps. Especially the spot where the barrel and receiver meet.
First off, really great video. I was wondering if you had any suggestions about barrels. I’ve seen some things about 7.62x39 having some feeding issues with standard M4 feed ramps.
I just want to say that your video is one of the most, if not the most, well presented and informative videos on this subject. I watched it a few day’s prior to my bca side charging upper came in. The only thing I did to mine before firing was replace the bca enhanced firing pin with one from black rifle arms and a vortex crossfire ii 3-9x40. I did not add the wolff xp spring although I had bought one. Anyway, using c-products duramags I fired 120 rounds so far, 80 of which were steel cased including tulamo fmj, wolf hp and zsr ap fmj, which are Turkish. The brass cased rounds were s&b psp. All worked without issue.
@@ExtremelyAverageMan So... I've a question if you don't mind (BCA 16" right side charging upper on an anderson lower). This past weekend I shot some more and after never having a problem, as my round count was almost 200, I had a failure to completely eject causing a jam. It messed the neck up on the fired casing but was easy to clear. I fired a couple of more rounds and then the same thing happened. I was using my 20 round duramag firing the cheap turkish steel cased rounds mentioned previously. So I wrote it off to bad rounds and I cleaned the gun, including removing the bolt and firing pin and looking at the ejector, which looks fine. Today, I had a chance to shoot so I loaded up my 10 round duramag with belom brass (I shot a couple of boxes of these last weekend with no issues). After the 3rd or 4th round it failed to properly eject causing the same jam and case damage as before. The only other piece of info I can add is that my brass is landing at about 1 o'clockish. I made a note to order the bcm extractor spring upgrade kit you mentioned in the video. I do have a spare Right to Bear extractor I'd bought to keep on hand but the one in there looks fine. Any other thoughts? Can it being over gassed cause the problem I'm describing? Thanks
I replaced the bear creek arsenal bolt with a black rifle arms bolt. It seems to run fine again. Oddly I was going to replace the spring in the stock bolt and the pin refuses to come out… After getting it sorted I added the aero precision low profile adjustable gas block and an h2 buffer weight.
Buffers can be tricky. Start carbine 3 .oz and spring. Heavy buffers can cause misfeeds from well functioning mags. KAK uppers seem to be gassed well and are from a company doing the 47 platform for some time. BRA bolts run full auto all day. An awesome round to run short with little loss of effectiveness, more so from a reliable platform.
Excellent primer and overview on making a "Well Regulated" AR15, in the venerable 762x39 caliber! I like the idea of a AR15 762x39 series in both the full 20 inch Rifle configuration and shorter barreled AR15 Pistol versions. No doubt, that C Products Defense Magazines are top of the line quality that function as to being; "Well Regulated". Nitride finishing is superior as compared to, Oxidized Parkerized Finishes as far as corrosion/eliment resistance. Yes indeed the use of a, Heavy Buffer and Wolff Heavy Firing Hammer Spring helps with especially preventing ignition problems of the Steel Cased Surplus ammunition Primers. Keep up the good needed work!
Just built one myself. I am running a palmetto arms Milspec lower, Milspec springs etc. etc. BCA upper Gen2 charge handle (these came with the enhanced firing pin). I got their upper with the hammer forged barrel($280). Really like the lifetime warranty. Ironically, I am also running a primary arms LPVO, I got it for 170 brand new since they were running a deal. Duramag 28 round mags (to fit in my Molle magazine pouches ony my vest.)
You could have mentioned something about buffer spring differences. I prefer a flatwire coil spring made by Tubbs paired with a Spikes T2 buffer(h2 weight made of Tungsten powder instead of solids). The spring adds a better/smoother recoil along with the weight not clunking. Give it a try, thank me later.
I got the Tubbs flat wire buffer spring also but the first one was bent and the silicone coating was peeling pretty bad then I called them and they sent me another one which wasn't bent but the silicone coating was peeling pretty bad too. I wonder I can somehow get the old coating off with gasoline or some kind of chemical and reapply another silicone coating. Any suggestions?forgot to mention I found silent buffer springs for only a few dollars more and kicked myself in the ass lol
This is a video the needed to be made. Thank you for putting it together.
Klayco! Thanks man! Keep up the great work yourself!
Have you had a chance to test the 75rd 7.62x39 drum designed for the AR platform? I love the idea, but I don't have confidence in the purchase yet. Given the current value of my dollar, the juice must be worth the squeeze. Thank you for your time and efforts sir.
@@jonathanrawls9992 I have not. To be fair, I don't have much of a use for drums, aside from a range toy haha. No problem, hope you found it helpful!
It's nice that you came out with this video. I made one in 2017 and "blew tub" dumped it. Anyway, I then covered all the shortcomings: mag failures to feed, lite strikes from short firing pins, extraction issues & stovepipes and breaking bolts/extractors. Your suggestions are what I did back then, as well as I use WMD NiBX coated 9310 bolts. With steel ammo, I've had great luck and currently over 4,000 rounds with no failure. Good job on your video. Just to mention you wrote 9130 steel BC, I think you meant 9310. Also, all my BCs are melonited as well..
Biggest problem I had was getting enough gas to the bolt, gas hole in barrel had to be opened up, extractors are a service item. C products are the most reliable mags, 28 rounders are the best. 5.56 firing pins are generally not reliable. Built 3 rifles, bought 2 (bca). Redex bolts are in my experience very well made.
Wow! I never imagined that this video would get half the amount of attention that it's gotten, thank you! I made this as a helpful guide, since I was answering people's same questions on Reddit and Facebook with their builds. I'm really glad you guys are finding this helpful. Is there anything else you'd like me to cover or go over in more detail, or any additional videos I can make? Thanks all!
-Average Man
One of the best walk throughs on yootoob. Do more...
It's a kinda fascinating topic, really. Building one of these scratches a lot of educational itches when you try to get one working right. Also, contrary to some moderately popular TH-camrs like VSO Gun Channel and Hoplifeil, there's a lot of merit to owning one of these and a actually running it if you can fit one in your budget. 7.62x39 in an AR will teach you recoil management faster than 5.56 in a similar configured AR, especially if you have a Trijicon TA31 on it. It'll teach you drop and wind compensation at shorter available ranges. It's arguable 300BO will as well, but there's a whole host of arguments against that idea from a training perspective, but mostly cost per round. It'll teach you maintenance and expectation management, cuz if you think about it a lot of us will go through periods of life where we just can't get the range time we want so we need that compressed education.
Because we get sent crappy 7.62x39mm firing pins
As soon as you said H2 buffer I knew the rest of the review was legit. Great video.
Also I think the other problem is when people go with a
Great vid. So tired of schooling people.I do recommend flatwire buffer spring(seems to smooth action even more)I run laurue trigs on all my x39s.Thanks again
You can totally change the name of this video to ‘The Comprehensive AR-47 Guide’.
Extremely above average video, and thanks so much for taking the time to make this.
Thanks man! What a compliment!
Best presentation video done on this subject I've seen over the years period.
"I don't always hit that subscribe button, but when I do, it's for ARx39 how-to videos".....
Quoted from nobody...
Haha thanks man! Really appreciate it, I'm glad this is helping people. I was certainly in the dark once!
Great Video!!! I built my AR-47 years ago, and it's never jammed, and it's really accurate. I use Duramag ( C Products) Mags. It's one of my favorite Firearms to shoot.
Same. I've always loved the x39 round. Coupling that with the manual of arms and the ergonomics of the AR platform is so satisfying.. Thanks for watching!
Me too , my 10 year old AR 47 is 100% reliable..... cheers
Any gas adjustment
I took the o-ring out of my extractor for 6.5 grendel to get more travel over the rim of the case. This might help other rifles or longevity of extractor, but will probably need to replace spring sooner.
Awesome video man! Love the cardboard diagram. The AR-47 gets a lot of hate but I love mine! I think mag choice is probably the biggest factor. Duramag for the win.
ASC is better
@@jbp3430 im getting ak soon which mag is better fr fr ??
Yes Durama is it believe me I literally have bought them all.
@@jbp3430u crazy!😊
@@LuisRodriguez-ny2qb duramag. They're the best ones, great quality.
For my AR-47s the key was an H2 buffer and Sprinco Hot White spring. Smoothed the operation right out.
Steel issues are almost always cheap barrels. Had a number of feed and extraction issues early on. Cleaned and oiled rigorously and after 100 rounds it smoothed out and runs great. When I rebuilt with a Diamondback barrel, no issues with any rounds from day one.
I'm working on my own video to document my foray into 7.62x39 builds. One thing I've learned can have a dramatic impact on bolt longevity is the overkill demolition of the six-o-clock lug in the extension to create one big feed ramp. Sanders Armory 16" barrel. Came this way. Snapped a lug on my first bolt at around 950 rounds. From the perspective of from behind the bolt and into the barrel it was the lug next to the extractor closest three-o-clock. Replaced bolt, then at around 300 rounds (all Belom) I NO-GO gauged it and found it was positive headspace. Looking at the bolt the same position lug was bent noticeable inward. Changed bolt again. Now, only 4 rounds in, what's left of the two lugs next to the absent six-o-clock lug look like they're peeling back and catching the brass and bending the cartridge at the neck. I consider my Sanders barrel now scuttled because of this.
My 18inch KAK w/ Midlength gas system... runs like a champ out of the box. Not a heavy barrel but groups certainly well enough. Even works with ASC mags and yet the feed ramps look very normal. Not necessarily 5.56 M4 ramps but, tastefully adjusted and not butchered. Oh and I did not notice the oddity that is my sanders barrel extension until I bought and looked at the KAK barrel, then it all made sense. I read some adjust their feed ramps but never thought to this extent.
My 16" Radical upper (impulse buy at a serious discount). This thing is an all-round problem child. Belom and also Sellier and Bellot bullets are literally too fat at the ogive to fit cuz I think they machined the throat on the barrel too short. I verified that I can slip a spent Belom brass into the chamber and it drops in farther than a new cartridge will. Barnaul runs fine but Barnaul is hard on ARs not just because of the steel case but they're one of the consistently hotter rounds out there and you really feel it. I reserve my Barnaul for my PTR; that thing eats it up.
Where did u get your Radical AR47 from? And how long have u had it or how old is it?
@@SammyTheSidePiece Primary Arms end of December, 2022. Was on sale for $229.99 then I also had a %12 off coupon and got it down to $203. Got a Primary Arms optic same order, took off the shipping so it was impossible to pass on. Just really wanted to try it out, see if it was worth the hype.
@@411DL yea man we got a Radical x39 from classic firearms a couple of weeks ago, on sale for 440$ and It looks and feels really nice. So far we got a Tubbs flat wire spring to reduce harmonic vibration and be forgiven on the BCG. The next upgrade is gonna be an adjustable gas block because I need as reliable as possible. I was asking when u got yours because I'm thinking when Radical first started making them maybe that was the trial and error period then after making them for some time, they made them better. Hopefully anyways lol
@@SammyTheSidePiece I should note that my upper did not come with a BCG or charge handle. Did you get a full rifle somewhere?
@@411DL oohh, yea we got the whole rifle man. Classic firearms is definitely the place to shop because they have really good quality stuff and the offer a lifetime warranty for a few more dollars at check out.
I know this video is a year old, though I wanted to chime in with my experience. I have been building AR-47s since the barrels have been available. I have learned a lot and even used one in the rifle classes I taught. If you buy a Bear creek, don't get the side charger. Why? Because you want a entirely different BCG in it from black rifle arms. You can only replace the bolt when you go with the side charger. I actually had over 20k rounds on a BCA 7.62x39 upper with a full BRA bolt carrier in it. The Bear Creek extractor broke after 300 rounds and the bolt face blew at 650. They were very quick in replacing the part, but I decided to upgrade them instead. The enhanced firing pin BCA uses is still very brittle and they break anywhere from 10-200 rounds. At one point bear creek gave everyone 2-3 extra because of all the issues they had with them breaking. The bear creek barrel was excellent and the only reason I replaced it after 20+k rounds was because the rifling was almost gone. It would still hold 4-6 inch groups at 100 but I really got my money from it and it was time to replace it. At that time bear creek barrels were extremely cheap, I think it was like 55$ so I ordered another one. I didn't even ask them to replace it but I am sure they would have. Now the BCA barrels are 100$ or more and you could easily get a Faxxon from Right to bear for about the same price. The Right to bear branded stuff is either aero, bear creek, or ballistic advantage rebranded stuff. I find nothing wrong with buying a bear creek 7.63x39 but if you do, account for the added expense of the black rifle arms complete bolt carrier group with firing pin. With that added, you are equal to the price of a PSA with much better reliability because of the Black rifle arms upgrades.
BRA bolt carriers work excellent. I have all the different mags. Clearance and polish the mags and lube the springs with dry lube. Extended firing pin. Comes in BRA bolt carrier. Polished mil spec trigger with standard springs has fired everything so far. Correct buffer spring and weight. Polished feed ramps. Runs reliable. Great deer caliber. More accurate than any AK I've shot with steel ammo. Mostly use brass but has run all the steel case I've tried. 100 yards 1.5" groups with Tula 154 gr. Sp
I bought a BCA 7.62x39 upper years ago when Obama wanted to ban M855 and 5.56 prices went crazy. I saved my 5.56 and decided to shoot some of my cheaper Russian steel case 7.62x39 ammo I stockpiled for my AK/SKS. I did end up having to replace my hammer spring with a heavier hammer spring and replacing the firing pin with an enhanced firing pin for mine to shoot Russian steel case more reliably. I still had issues igniting Golden Tiger, but I just save that for my AK and SKS. On my bolt, I replaced the bolt with a Young Manufacturing heavy duty bolt with heavy duty extractor. I also prefer the 20rd Duramags. So far it's been reliable enough for range use, and I wouldn't be afraid to use it for defense if I had to.
Isn't it amazing how the anti-2A crowd get us to spend more money than we ever thought we should? I don't think the boomers were kidding when they said the best firearms salesmen are the very same people that want to ban them.
Mine had just broke the extractor after about 3,700 rounds with a toolcraft bcg. I run superlative arms gas block and a 1.77oz buffer with standard carbine spring. Perfect ejection pattern and consistent with either 46gr Czech surplus up to 154gr Tula. Best luck I’ve had with mags is Ross defense unimags, unfortunately no longer get them. But great breakdown of the parts very detailed, everything you covered is correct for longevity of the parts sad it took someone so long to make a good video covering all of this. Oh forgot to mention redxarms is gtg I got a lot of my spare parts from them.
Toolcraft has lifetime warranty aswell when my extractor broke they sent me 3 more
Thank you for making this video. I've been through most of these issues and have done these upgrades already. But it's good to have a tutorial for the newbie's. I keep a complete entranced BCG on hand when I shoot my AR47. If I break an extractor, I can just slap in the other BCG and replace the broken extractor at home. The adjustable gas block was my last upgrade.
Awesome, glad I could help! Yep, we've all been there and these builds are surely trial and error. That's probably the best resolution at the range-a broken extractor is easy to replace in 5 minutes, but even easier is to just pop in your "on deck" bolt carrier group and just replace the extractor at home while you keep chugging away at the range!
😎
With regards to the ejection pattern. Your ejector spring can vary where it throws brass also. You will notice a different bolt with a stronger or weaker spring will change your ejection pattern drastically. Which can skew your results.
1. Wolff hammer spring
2. extended firing pin
3. polished feed ramps
4. duramags.
Sounds like you watched the video, thanks!
Polished feed ramp and duramag is a MUST!!! I cannot stress that out enough
I’ve had good luck with the Wyndham Weaponry 7.62x39 upper on an Areo lower. Nice video!
Thanks man! I've heard a couple people mention Windham Weaponry, always good to know of another solid manufacturer. Thanks for watching!
I've had good luck also with my Wyndham weaponry 762×39 SRC m4 carbine had a little trouble at first with the gas tube had to change it out also got enhanced firing pin and upgraded the hammer spring and it has ran like a sewing machine
That's all good and dandy FOR BRASS AMMO, but if you're shooting steel cased ammo, you're going to need an enhanced hammer spring to go with the enhanced firing pin to eliminate those light primer strikes. I was getting 5 to 6 light primer strikes for every 30 rounds fired. I got the "Wolff AR-15 Extra Hammer Spring WS-30093". My AR-47 goes "bang" every time now! Also, don't buy the enhanced firing pin from Bear Creek Arsenal, it is crap (several other comments say the same thing about it). Mine broke on the very first shot. Lucky for me the manager at Range USA let me go home and get my extra enhanced firing pin from Windham Weaponry so I could come back and continue shooting. With both my enhanced firing pin and the enhanced hammer spring it eliminated the light primer strikes. I shot my AR-47 70 times that day to test and it worked. Have not had any trouble since.
Currently optimizing my AR's for steel. Last range trip I shot 80 rounds of lacquered steel and had 2 failure to feeds. I've since polished my feed ramps with Flitz, hoping that resolves the issue. Thanks for watching!
Right to bear I stand by
On your Bear Creek arsenal there should be up v at the back of the upper you can take that out and put a charge handle back there if you wanted
I got an AR 47 upper from Palmetto State Armory a few years ago and have had no problems with it so far.
Nice! I'd like to play with the AR's that accept AK mags..I'm sure I'll get my hands on one at some point haha. Thanks for watching!
Great useful content. Lazy old woods loafer here.
My state has no magazine limits for big or small game.
For tactically holding down a stump, boulder, or log with my tactical backside, I love the duramag ten rounders .
If there is a chance of a sounder the twenty is my choice. Just too lazy to carry 27-30 rounds on the rifle.
I rolled the dice and went with a trybe defense upper.
Did not want to test my toddler like mechanical skills building an upper for this caliber.
The 30/30 and 7.62x39 are time honored blue collar freezer fillers in Appalachia.
Now it is becoming more approachable for us poors.
This is a great video to deal with any issues and for tuning.
Thanks so much! Agree with all of your points!
@@ExtremelyAverageMan 100% BROTHER.
I love that word... tactical. lol
An extended-length firing pin was CRUCIAL in my build. An "enhanced" extractor has been a great investment too.
I did both those and installed the nitride covered bolt pin so it will move smoother.
When I ordered 1 for my radical 762 I decided to order 3 total and stick the other 2 in my 556 ars since it was cheap enough.
Who did you buy the firing pin from?
@@bobbye7353 black rifle arms.
Just got me a barreled (no BCG and charging handle, for those who don't know) 7.62 x 39 upper by Radical Firearms and gonna build on top of an Aero Precision lower. This video is a godsend because I haven't bought a lot of the major parts yet. This is gonna save me a lot of trouble and money! I appreciate the info and I learned about how to tell if a rifle is overgassed or not! (Seriously, I was just shopping and doing research when this video randomly popped up in my feed!) Thank you!
Glad I could help and enjoy! Let us know if you need any help! If you have reddit, r/AR47 is a helpful place too.
@@ExtremelyAverageMan Appreciate the offer and I might just need the help! I have built an AR15 in the past; a really nice CMMG Resolute in 5.7 x 28 in Flat Dark Earth (it looks sexy with an FDE stock and grip with a black lower and buffer tube [the lines are gorgeous]). It's a sweet little shooter with no recoil at all. Time to add to my rifle building repertoire!
Don't need the BCG for this build, just a new bolt. Save u a lot of moolah
Make sure You're feed ramps are polished smooth... You're hammer spring is heavy for steel case Russian primers, and You're running an enhanced firing pin 😉
Nitride treatment is more brittle. Can make the surface chip on on corners. Phosphate is more reliable FOR BOLTS
Phosphate will certainly last longer when firing but nitride is smoother and far more rust resistant while being a little more brittle than phosphate. Phosphate will last longer under firing while nitride will last longer when unused and it won't require as much lube to run as phosphate will.
Thank you for your efforts in making this excellent video. I have a Radical Arms AR-47 that runs reliably well now after incorporating many of your suggestions. And I've referred back to the video on many occasions.
Great video!
Simple straightforward and easy to understand!
I recently purchased a 7.5” 7.62 upper from BCA… lots of issues…
Which your video addressed!
Broken firing pin 100 rds…
Loose Gas Block 150 rds…
Which caused failure to cycle….
Several failure to extracts…
Next 200 rds…
Sent it in as a warranty replacement…
Second upper…
Immediately replaced Firing Pin…
No light strikes but…
Consistent failure to extracts!!!
Grrrrrrr!😬
I love this upper… and so does my Marine son…!
Your video answered and addressed all my concerns and questions!
The BCA upper cost 1/4 of what my son paid re-creating his Service Weapon in 5.56…
Bravo Company upper…
PSA lower with a $300 Trigger and ACOG sight…😁
He still loves the Dirty Little 7.5” 7.62 upper!
I just need it to run …RELIABLY!
And yes…
We are running Bardaul steel case through it…
It kicks with a muzzle flash in excess of 3-4 feet!
But that’s the whole point!
Thank you for your incredible video!
Keep up the great work!
Definitely earned a subscriber!😉
@hankbirmingham6662 Bear Creek Arsenal's got a lot of issues that I presume can be corrected with patience and money. The oversized gas ports will put too much pressure on the BCG and I also hear that their extractors are made out of cast steel rather than forged. Take the part about the BCC with a grain of salt but if you're consistently having issues I would replace the extractor BCA gives you with one from a reputable company and I'd also get an adjustable gas block and/or replace the barrel that has the appropriate gas block dimensions. I do hope this will fix your problems.
Bro! Your video was EXCELLENT!!! Quite possibly the most clear, concise, honest, thurough and organized presentation i have ever seen on any topic. I had no idea i needed a 7.62x39 upper, but, after watching your video, it not only makes logical sense (ammo cost, 30 caliber option) to build one, but i don't have any apprehension as to where to start or what to do! You have simply removed any fear or hesitation that i would ordinarily have if someone told me i should go and do something i've never done before. You seem to have a gift for teaching and communicating with unusual clarity. Thank you!
I have one of these and the only thing I had to do was get an enhanced firing pin. It runs flawlessly now
I highly recommend using brass case ammo only! And going with an adjustable gas block for the longevity of the BCG.
If you have light strikes, just bend the hammer spring on each leg a bit to firm it up for steel cased primers
Awesome just ordered a bolt an extra extractor from sanders armory. Thank you. This Video needed to be made. Great information.
Phenomenal video, I was having issues with my BCA upper/lower but you addressed all of my concerns. Definitely earned a sub.
I'm seeing alot of these builds going past the 5k mark as far as round count before failure, I think that pretty darn good.
I bought my first AR47 back in 2007. It was a Armalite. In their owners manual it said not to run steel case. Other wise it would void the warranty. So I all ways stuck with brass cased ammo. (I reload now.) I also make sure the gas system is working perfectly. The ejection is at three o’clock. Never broke a extractor or bolt. Built two more AR47 rifles and bought a BCA at Christmas. I use heat resistance blue loctite on the gas block set screws and handguard screws. The bolts for the handguard thread into the barrel nut. They can get pretty hot. And standard blue loctite is not a good choice. On one of my builds I used a cheap adjustable gas block. After two times out to the range. I could tell that the adjustment screws were seizing up from carbon. Read on another forum that a guy used aluminum based anti seize on his adjustment screws. After two thousand rounds they still move freely. (Anti seize is good up to 1600 degrees.)
Thorough. I've seen so many questions posted over the years and this answers pretty much everything. Mine are 1.Radical 16" carbine gas with A2 stock/rifle buffer, tubbs 308 flatwire spring, MBT2, lpvo 2.BCA 10.5 carbine gas with H2, damage ind cs carbine spring, Spikes battle trigger, cheap adjustable gas block, mini PA rds. They're basically both spare parts bin hobby guns but they have the components you covered and work. Definitely 20, 28 duramags.
Great Video I enjoyed it. I was impressed with accuracy of 7.62x39 out of an AR. There are adjustable buffer weight kits for about the same cost of a buffer weight. I ended up going with a fixed A1 stock, recoil is much smoother. I need to check out an adjustable gas block.
Two more things to talk about regarding AR-47s.
1>Taking out the firing pin and chucking it up in a drill to face off the end travel with a metal file for light strikes.
2>Marking your AR look alike with a visible ranger band so you don't accidentally put an AR-15 magazine into you AR-47 rifle.
You defiantly have a new subscriber. Great video with great information.I made the Switch over to 7.62x39 a year ago and got all the kinks worked out. You definitely have to do your research before switching over and building a AR-47 platform. It can be a pain at first, but once you get it fine tune it runs smooth as butter. Belom brass is the way to go. I've drop plenty of hogs with those rounds.
Thanks bud! Yeah, I feel it's that much more rewarding once you go through the trial by fire and get your gun running smoothly. Makes you appreciate the rifle more!
Awesome video just subbed! I have narrowed down my x39 barrels to diamondback firearms with zero issues running steel and all BCG’s are BRA period! I have not run Faxon but do have some of there bolts as the specs on them are impressive, superlative arms adjustable Gasblocks ar 100% and if you run suppressed it’s the key to keep it running smooth. For subsonic loads 196 brown bear you have to enlarge gas port to 2.80mm with h2 buffer has been 100% for me consistently. If the gun will mot run reliably on steel case then I would find the problem and change it out just saying, I own the new sig LT and Pws x39 guns which are hands down 100% but enjoy my home build x39 uppers and have now got the years of trial and error down to a reliable platform! I encourage anyone that wants a x39 AR platform to spend that extra $$ to begin with so they don’t get disappointed first thing. One of my PWS guns has over 7,000 +\- rounds and only been cleaned twice, sig is still getting rounds but be awhile before that round count get there.
Thanks man! Yeah I'm trying to help people here by getting them to run good initially...although I wouldn't have learned half as much if I didn't have issues along the way haha. Yeah I need to narrow steel issue down. At the time I was getting stuck cases with Tula, but I do have some lacquered steel at the moment...maybe I'll give it a go next range trip. Thanks for the sub and for watching!
EAM, I will recommend Wyndham Arms Enhanced Firing Pin (A Premier Manufacturer!) Longest ones and clearly best made ones that I have purchased, Light strikes are a problem with the amount of strike, or really length on your steel ammo being your reason of F.T.Fire! And this actual is the reason we buy these enhanced pins!
Also Wyndham pins don't break like those from your rifle company! I tried the stuff from BCA, and it's basically junk, or everything I have seen is very poorly machined and prone to fail! I did the math on this, and your hammer strike isn't usually the major problem. It is how much protrusion past the bolt face!!! I now get 100% reliability with Steel cases, or my brass, or reloads now!
Another buffer you can try is a JPS Silent Buffer system! Way more money of course But love the lack of spring noises from the stock!
Thanks for the info!
@@ExtremelyAverageMan YA, BCA IS JUNK, LMFAO.
Awesome video, Average Man! I don't have an AR-47 nor do I plan to in the short term, but this is an excellent video on how to make it reliable. And I love the cardboard diagramming!
Haha thanks! I figured it would make for a good way to organize all of that information.
I love my AR-47! Built on an 80% lower and a Stoner complete upper from Midway for about $700 including buffer system and furniture. I use ASC sheet metal mags for the fatter cartridge. I had a couple FF jams at first, but then I polished the feed ramp with a dremel tool and it's been flawless ever since. I think I sanded down the feed pedals on the mags to make them smoother too.
I wanna thank you for this video I’ve built a whole ar47pistol and it shoots flawlessly thank you again and keep up the good work
Thanks man this is the most I’ve learned about this particular build than in the last year. Very helpful.
J&p hammer spring, excellent and made a regular mil spec hammer nearly as nice as an expensive timney. About 4 lb pull. Right to bear enhanced firing pin seems to be doing the trick with wolf steel case. The feed ramps, this is a big deal, don't over look it. Regular m4 are not the best for this. BCA runs basically an enhanced feed ramp vs the standard 5.56 m4. I run both Duramag and ASC mags. No issues
Right to bear is a good company. I have bought a lot of stuff but they never had any complaints
Good to know!
Thanks for this. Answered almost all my questions.
Great video on this topic. Took some trial and error to get 762 running smooth, but I love it and think all enthusiasts should consider building one.
Yup, a bit of trial and error to get these builds to run reliably...but that's part of the fun haha
I know I am a little late to the comment section here, but this video is outstanding. I wished it was around years ago when I was trying to figure out how to build a reliable “AR47.” I will tell you after building many of these rifles that my best experience with BCG’s has been with the Fail Zero nickel boron. They are pricey, but have proven to be the most reliable BCG I have ever used in this platform. I would consider them second to none in performance and reliability not to mention they are worth their weight in gold when it comes to the reduction in frustration that comes with extractors and firing pin failures. Thank you for the very informative video, it is very obvious that you have an exceptional level of experience with this platform as you massed your information exactly where the problems lie with the “AR47.”
After around a year my AR47 runs well. Replaced my Firing Pin with an "Enhanced Bear Creek" in SS. So I have an extra. I only used Brass so not an issue. Will be purchasing Extra parts and things. My x39 is a standard rear and my 5.56 is my side charge. So backwards. But I'm going to be purchasing a different upper in x39. Thanks for the info. Great video.
Will check my gas system and recheck my weight in my buffer on both builds. Not my first rodeo, but I only run around 3-5 hundred rounds a year as I can't afford it. I live on SS.
Again thanks
I've built two 7.62.39 uppers and the only issue I had was on the one I tried a cassette style trigger and just had way to many light primer strikes...I just use mil spec style triggers and springs in nickel boron and I will use what I call a take up screw in my pistol grip screw hole to take the creep out of the trigger and I've found C- products and ASC mags work the best.
I just picked up a right to bear 762x39 complete bolt carrier group for 99$ this week. Long story short. I had an extra lower I wasn't using. Last weekend I went to my local gun store and I found a complete 762x39 upper assembly with charging handle. So I paid 250$ for it and ordered that bolt carrier group from RTBA . I put everything together last night and I plan on going to the range tomorrow morning. The lower I'm running is palmetto state. The upper is a brand I'm not familiar with. Hopefully all goes well. I enjoyed your video
WELL ?
Thanks! How'd it do?
I upgrade all of my extractors to phosphate microbest extractors. The phosphate coating helps grab the brass and hang on until it leaves the ejection port. Slick surfaces like nitride or NiB are not ideal for extractor coatings because they have a tendency to slip.
I appreciate the info!
@@ExtremelyAverageMan have u heard of Cryptic Mystic coated BCGs?
@@ExtremelyAverageMan also I wonder if the shortened AR10 chambered x39 BCG from CMMG would fit in my Radical AR47?
I’ve been running x39 AR’s for a few years now with no issues, an 18” mid gas and 16” carbine gas. My setups have A5 buffer systems, adjustable gas blocks, and Young Manufacturing bolts. The A5 system is comparable to a rifle length buffer system which help slows the carrier which reduces wear on the bolt. The adjustable gas block helps fine tune the gas that cycles the carrier which also helps with wear. The most important is the Young Manufacturing 7.62x39 bolt. The bolt has a thicker wall and extractor than most/all x39 bolts on the market. Young Manufacturing was bought out by KE arms in 2021. They still sell the bolt but for whatever reason don’t have the description on the bolt specs on the website.
That's good to hear about the Young Manufacturing Bolt, I caught wind of it soon after this video of course, after FocusTripp put out his vid on it too. Looks like a better option for longevity
@@ExtremelyAverageManI’ve had mine for quite a while now and it’s held up so far. Granted I haven’t put thousands of rounds through my rifles but with the hundreds I’ve put through I haven’t had any issues. I got my bolts before KE arms acquired Young Manufacturing in 2021. Seen a vid of a guy who had bolt carriers from before and after and the latter carrier was out of spec. Then they ended up sending him another out of spec carrier after he returned the first. So I’m not sure about the QC of Young Manufacturing at this time
@@blaksabbath9108Perhaps that's why the new management removed the bolt specs but that's just speculation on my part. Damn shame if that's the case though.
I Also Added A Wolff Extra Power Hammer Spring From Brownells To Mine Many Years Ago And My Build Has Run Flawlessly To Date! You Can Also Install A Competition Muzzle Break To Control The recoil With A Standard Buffer Spring!
I've Built Quit A Few AR-47's Over The Years For Myself, Friends And Family Members & Everyone Of Them Are Still Running Flawlessly After Many Years Of Continuous Use! Thanks For The Video!
Hey I appreciate your video man! I've been looking into this type of rifle to prepare for hunting next year and this video has ALL the information I needed, keep doing what you do 💯
Here's a brain block. I sure could use some help with fellow shooters. A little background on me and my equipment. I would consider myself well informed and experienced with the AR pattern rifle and other firearms in general.I have built over a dozen ARs and hand built 3 1911s. 5 of these 762x39, 3 for my safe and two others for family. So, please NO did you clean your rifle, make sure your magazine is fully seated, or look for trash in your chamber comments. Also everything in this video I have done in enhancments already. My first 7.62 x 39 is a 16-inch rifle. In the first thousand rounds it was very reliable, had one stuck case and broke the claw off the extractor around 800 rounds. Replaced it and shot up to around 1600 - 2000 rounds and it broke again. After that, I replaced it with 3 different extractors and swapped out to a new bolt carier, and bolt. For some reason it won't exrtract the case from the chamber reliably. Prior to this I was able to use all my Duramags, and ASC mags without issue. Replaced the spring and Viton gasket in the bolt, tried cycling it with and without a combination of those. H2 buffer and carbine spring hs no change and in spec. Even noticed when hand cycling the rifle sometimes its not stripping a round out of the magazine as well. I just don't get how it goes to running really well to what it's doing now. So for those that might know where to point me, I'd be grateful.
I would check the alignment of the gas block to the barrel gas port next. It may have "shifted" over time and happens more often than you would imagine. A dimple in the barrel (not all barrels have them) and some blue Loctite (not everybody uses it) will keep it in place.
Yea it definitely sounds like the gas block, the gas tube or depending on what kind of bcg u replaced, the gas key could be out of spec or an adjustable key that needs to be properly tuned. just to be safe I would get an adjustable gas block from Superlative arms and a new all steel non coated gas tube an then make sure the gas key is functional.
Can’t wait for more material!
I play on it! Stay tuned for more!
I have made two AR47 builds as well, and I've gone perhaps a little overboard on them both, guts-wise.
First, a BCA side-charge upper receiver holding onto a 16" Faxon mid-length gunner barrel, adjustable gas block, and Kaw Valley 5.4oz (H3) buffer.
Second build is based on a standard top-charging upper with a KAK bolt, KAK 16" carbine length nitride barrel, but I had a bunch of spare parts lying around so I used an Adams micro piston for the operating system. Also using a Kaw Valley 5.4oz tungsten. Both builds use the BCA enhanced pin and Witt Machine SME muzzle device. I was worried at first that cheap 7.62 wouldn't work with higher end drop-in triggers but... they do! So I've got a CMC drop-in on both of em.
I got a bunch of extra extractors just to be sure, but they are actually so much fun to shoot that I've started buying Sellier & Bellot FMJ brass rounds in bulk. They're not cheap, but they ARE fun enough to make it worth it!
Great video, I learned a lot about the areas to improve the reliability with the 7.62x39. I love that round.
Wow.... spoken like an average guy! Sub'd. I built my first AR-47 about 8 years ago and have run into most of the common "issues". I solved my issues with a credit card, a lot of range time, and a lot of part swapping. It really does boil down to the 4 points you highlighted. PS, I have a couple of "Right To Bear" barrels, I find them to be pretty darn good for the price, they ship quickly and have been great to deal with.
Awesome, thank you!
I am a beginner with all this but I totally understand everything you talked about . Super informative , very helpful .
Thank you !
No problem bud, I was fresh at it on the first build too! Glad I could help and good luck!
i have 5000ish rounds on my 762x39 kak/bca build never had any issues, also i only shoot steel case.
If I didn't have a Norinco mak-90 I would totally do an upper in this caliber. I got that rifle in 1999 for a cheap price plus I got a bunch of $2 a box Wolf Ammo much of which I still have.
I do have a Grendel that I made and it has the same diameter and shape case as 7.62X39. I've made it as a precision rifle so I don't think it's going to have a super long round count anyway.
This would make a cool opportunity for someone who doesn't have an AK. The round is really quite excellent and a very good penetrator. It will go right through a cinder block and break it in two easy. One thing I like about my AK is that it doesn't just accept steel case ammo, it is actually better to shoot steel case through your AK. I don't know how they were able to take the AK and make it where it performs better with steel case than brass. I would not have this AR upper if it can't comfortably handle steel case. This is a major part the 7.62X39 world. Might as well do 300 Blackout if you can't handle steelcase in 7.62X39..
Currently resolving this. I ran 80 rounds of lacquered steel through last range trip and had 2 failure to feeds, but otherwise ran fine. I've since polished my feed ramps with Flitz, hoping it resolves the issue. Thanks for sharing!
@@ExtremelyAverageMan I would try some more steel case and see if it has worked itself out. Or maybe there's an improved extractor available.
Depends on who you ask about these x39ers. A self claimed expert told my friend that an enhanced pin can penetrate the primer of a round. Causing a💥 in the wrong direction.
My friend also heard that using brass in an ak can cause the same ordeal. It was described to my friend as a nightmare to clean the brass out of the bore.
I have never heard of that happening. Wouldn't matter anyway, a pierced primer is a pierced primer. It's not like the "enhanced" pin makes it explode more haha, it just ensures that it indeed does pierce the primers of the steel cased stuff, which generally have tougher primers.
Found the link to ur video on Reddit! I was thinking about doing a 7.62x39 build. Phenomenal video boss. You’re super helpful in laying out all the details and problems that occur. I had similar problems with my 6.5 Grendel so I think I’d be in a similar playing field of problems with 7.62x39. Keep making awesome content. I look forward to more videos.
Thanks man I really appreciate it! Yeah, these builds are very much trial and error to get set up haha
I just put an enhanced firing pin and extra heavy hammer spring in mine. Running steel case ammo like a champ now!
I agree with many if not most of your recommendations. One thing I recommend for over gas issues is to start with the adjustable gas block then go to increasing buffer weight as needed. It is best to limit the amount of gas going into the BCG to avoid excess fouling and gas in your face. My rifle still has the carbine buffer and ejects where it should after adjusting the gas block. But I may try a heavier buffer just to see if there is something I am missing! Thanks for the video.
My daughter loves to shoot AR’s and I relish time spent with her. She shoots her husband’s, but wants to call one her own. Melts my heart. I ordered a Moriarti arms 16” kit 7.62x39 fourth of July sale (Go America!) watched this video four times and took detailed notes. (She wanted a rifle to have fun with, yet reliably harvest deer and hogs.) I then read every comment and took even more notes. As you stated, you wanted to present a detailed blueprint on how to get it right the FIRST TIME. Can’t wait to spend time building this WITH HER and am confident that this dad has the ability to do it right. THANK YOU MY MAN!!!!
Thanks for the wonderful comment! Absolutely, now that you know what to look for, good luck on your journey and making memories at the range!
@@ExtremelyAverageMan love the way you think…
Main issue I had with mine were feeding issues at the ramp, a bunch of stovepipe, log jams etc or shell completely stuck. Refit my gas block and smoothed out/ widened feed ramp. It works like a machine now, my favorite gun to shoot and cheap ammo. And yes it is a heavy Barrel! But very accurate
Professor, you are an excellent instructor
Thanks!
One thing I noticed building these uppers is that some barrel manufactures will sell you a 7.62x39 chambered barrel with 223 extension ramps not 30 cal ramps. BCA at least has 30 cal feed ramps on the barrel extension. Not sure if this was covered in the video
Yes , well done , love the reader's digest version . Made it a quick study on the subject and answered questions i've had that have gone unanswered.
Great video. Thanks for explaining to another average dude.
can confirm about the duramag, have a pair of 10 rounders, accidently ran one through the washer & dryer, still works even with a minor ding to the feed lip and some loss of the paint
I also have the KAK "enhanced" BCG the first was a Stoner and it ate itself, but about 100rds in with flip up irons im ejecting about 2:30 to 4:30, but i need more time on it
Surplus Ammo has a great selection of spare bolts and parts. Great prices.
I love this cardboard flow chart lmao. great vid
Extremely Average Man, but Extremely High-end Information.
I just ordered my first 7.62x39 AR and your video answered me like thousand question! Absolutely stellar!
Thank you!!!
You're welcome my friend!
New sub! Glad youtube was using my phone to listen to me talk to my friends about my next build! 😅 great content, Thanks
Just finished my build,. So far only 100 rounds thru it, but it ran Flawless. One hiccup was a Failure to feed. That was a Magazine problem. ASC 5 ends. {I still use them, Its all I have now} Rectified that. Love it !. Much better than the Half dozen 5.56 and .300 Blk out's I've built. But I will buy a 5.56 upper to play with. Why not ,right? Anyhow, Navy "75-81". Thanks for the Video. Big info
Superlative Arms gas block is adjustable with a bleed off valve so you can fine tune the amount of gas that goes into the bcg and sends the rest of the gas away from our pretty faces lol
Great video! I’ve had a 16, 10.5, & 7.5 from BCA. Only have the 16 now. The pistols were unreliable. It started as a Gen 1 side charger and I could not stand that little screw. It kept coming loose. I’ve changed it to a rear charging receiver to rid my self of the headache. It’s funny, I’ve never had issues with ejection. Although I did make a few changes before I even shot it. I swapped the buffer to H2 and have had the heavier trigger spring and enhanced firing pin. So I guess those changes made all the difference. Along with C products mags, I think that info was out there but I definitely had to look everywhere for them. You have them here all in one place. Wish I had this video when I first started. Great video.
No problem! I had to do the same as well, a LOT of reading through forums and various random videos and reddit threads to try and find good advice/answers/remedies to the issues we encounter. My intention was to put it all in one place for people, so thank you very much! Yup, sounded like you did very good on your AR-47 solutions. I have the gen 2 side charge on both of those builds you see which mitigated that charging handle bolt coming loose (blue loctite not needed thankfully!)
Thank you for this video. I went with the Radical Firearms AR-15 chambered in 7.62x39 and I know that I have to upgrade parts and this video gives me great insight 👍🏽
Since I've made this video, I've only heard great things about Radical Firearms, sounds like a great choice! Give us a status update after a bit of time with it!
@@ExtremelyAverageMan Will do! Thanks
Thanks for your helpful information. This will definitely improve our experiences in this important platform.
Great video, been looking into the 7.62x39
Many claim this can’t be done. Typically by those who don’t understand fine tuning an AR15 or how to find actual root causes of failures.
I have built several. From 7.5-16.. The 7.5 was the hardest to get running and running reliably.
All run steel case.
Keep a spare extractor and use dura mags.
VERY FUN Gun to shoot, but just not reliable enough for me! I built one w/ 20" Bull Barrel for long range accuracy w/ lower cost ammo but unfortunately am not a fan of MY FYI BUILD!
Not happy with stoppages needed to clear out a no shot rounds. This is a deal breaker for me at the range so it WILL NOT stay as-is in my collection. Granted, my DYI build may have not been done correctly! However, I will no longer chase this rabbit down the hole to better understand how to fix my issues. AR-15's were designed for .223/5.56 ammo and should only be refined for this ammo in my opinion!
God's speed to you wonderful DYI folks who enjoy chasing this option and make it work!
I however will stick with 5.56 in the AR platform and consider purchasing something else designed for this 7.62 caliber.
God Bless and stay engaged in our 2A passion!
Feed ramps is a big thing. Unless your are buying a completely pre-built upper. If your are building your upper from the ground upper your going to have to smooth the feedramps. Especially the spot where the barrel and receiver meet.
First off, really great video. I was wondering if you had any suggestions about barrels. I’ve seen some things about 7.62x39 having some feeding issues with standard M4 feed ramps.
I just want to say that your video is one of the most, if not the most, well presented and informative videos on this subject. I watched it a few day’s prior to my bca side charging upper came in. The only thing I did to mine before firing was replace the bca enhanced firing pin with one from black rifle arms and a vortex crossfire ii 3-9x40. I did not add the wolff xp spring although I had bought one. Anyway, using c-products duramags I fired 120 rounds so far, 80 of which were steel cased including tulamo fmj, wolf hp and zsr ap fmj, which are Turkish. The brass cased rounds were s&b psp. All worked without issue.
Awesome, thanks for watching! Yeah the BCA firing pins are know to fail early, even if they state that they're "enhanced".
@@ExtremelyAverageMan So... I've a question if you don't mind (BCA 16" right side charging upper on an anderson lower).
This past weekend I shot some more and after never having a problem, as my round count was almost 200, I had a failure to completely eject causing a jam. It messed the neck up on the fired casing but was easy to clear. I fired a couple of more rounds and then the same thing happened. I was using my 20 round duramag firing the cheap turkish steel cased rounds mentioned previously. So I wrote it off to bad rounds and I cleaned the gun, including removing the bolt and firing pin and looking at the ejector, which looks fine.
Today, I had a chance to shoot so I loaded up my 10 round duramag with belom brass (I shot a couple of boxes of these last weekend with no issues). After the 3rd or 4th round it failed to properly eject causing the same jam and case damage as before. The only other piece of info I can add is that my brass is landing at about 1 o'clockish.
I made a note to order the bcm extractor spring upgrade kit you mentioned in the video. I do have a spare Right to Bear extractor I'd bought to keep on hand but the one in there looks fine. Any other thoughts? Can it being over gassed cause the problem I'm describing?
Thanks
I replaced the bear creek arsenal bolt with a black rifle arms bolt. It seems to run fine again. Oddly I was going to replace the spring in the stock bolt and the pin refuses to come out…
After getting it sorted I added the aero precision low profile adjustable gas block and an h2 buffer weight.
RTB is a good company. Have had good luck with the bolts from them for the x39.
Any idea on bolt life?
Buffers can be tricky. Start carbine 3 .oz and spring. Heavy buffers can cause misfeeds from well functioning mags. KAK uppers seem to be gassed well and are from a company doing the 47 platform for some time. BRA bolts run full auto all day. An awesome round to run short with little loss of effectiveness, more so from a reliable platform.
Excellent primer and overview on
making a "Well Regulated" AR15,
in the venerable 762x39 caliber!
I like the idea of a AR15 762x39 series in both the full 20 inch Rifle configuration and shorter barreled AR15 Pistol versions.
No doubt, that C Products Defense Magazines are top of the line quality that function as to being; "Well Regulated".
Nitride finishing is superior as compared to, Oxidized Parkerized Finishes as far as corrosion/eliment resistance.
Yes indeed the use of a, Heavy Buffer and Wolff Heavy Firing Hammer Spring helps with especially preventing ignition problems of the Steel Cased Surplus ammunition Primers.
Keep up the good needed work!
Thanks for watching!
Just built one myself. I am running a palmetto arms Milspec lower, Milspec springs etc. etc. BCA upper Gen2 charge handle (these came with the enhanced firing pin). I got their upper with the hammer forged barrel($280). Really like the lifetime warranty. Ironically, I am also running a primary arms LPVO, I got it for 170 brand new since they were running a deal. Duramag 28 round mags (to fit in my Molle magazine pouches ony my vest.)
Nice!
excellent! thanks . Just starting my 7.62x39 build. Very helpful
I just bought a $400 Radical firearms 7.62x39 ar15. I just ordered some backup extractors.
This was a very well put together video and tons of information for gas system and adjusting properly, thank you
You could have mentioned something about buffer spring differences. I prefer a flatwire coil spring made by Tubbs paired with a Spikes T2 buffer(h2 weight made of Tungsten powder instead of solids). The spring adds a better/smoother recoil along with the weight not clunking. Give it a try, thank me later.
I got the Tubbs flat wire buffer spring also but the first one was bent and the silicone coating was peeling pretty bad then I called them and they sent me another one which wasn't bent but the silicone coating was peeling pretty bad too. I wonder I can somehow get the old coating off with gasoline or some kind of chemical and reapply another silicone coating. Any suggestions?forgot to mention I found silent buffer springs for only a few dollars more and kicked myself in the ass lol
I heard that the 1st 100 rounds should be brass on these x39ers. I’ve actually heard people swear by this 1st 100 brass break in