It's great to see Stern Defense taking issues into consideration and to make steps ALREADY to change them for the better. They saw this comment section and the thoughts of the viewers, and have already lowered their price a little, as well as making a stronger Mag Release for the unit, hopefully that version will be available soon. In the end we are all apart of the Firearms Community and it's great to see a company putting in effort to make the best product they can!
Our improved mag latch is now available! We have re-engineered the mag release to be flush with the mag well so it cannot be hit or caught on anything. Also, we have upgraded the material to 4140 alloy steel which has a very high yield and tensil strength.
I know my comments are coming more than four years after you posted this video, but I can almost guarantee your last round hold-open failures weren't the fault of the Stern unit. I'd bet it was the magazine followers. I've been running the hell out of two of those Stern AD9 conversion units for two years, and the only time I have a failure of the bolt closing after the last round is when I'm using genuine Glock magazines! And of the dozens of Glock mags I have, it's only three or four that give me this problem. I have more than 60 KCI Korean-made 33-round mags and they work perfectly. I'm speaking heresy here, but I'm not at all fond of Magpul's 17-round mags. They swell up when fully loaded and spend an afternoon in the trunk of my car during the summertime, and they aren't as "perfect" as most people think Magpul mags are. In fact, I have had flawless experiences with ProMag magazines, which I widely disparaged as junk. I'll say this: they're more like genuine Glock mags than are the pure polymer boxes MagPul produces. They are entirely metal internally, just like the real McCoy. I loved your video, overall. I just wanted to point out your issue as being mag-related. I've built dozens and dozens of AR rifles and pistols, and nowadays, I don't even think about building a 9mm version with a dedicated lower receiver. Stern's device is so well engineered and built, and so rock solid reliable, I can't see sacrificing the versatility of the lower receiver assembly by limiting it to a pistol caliber only carbine (or pistol). My two favorites both sport stainless barrels from Odin Works. A 10" version which milks every bit of ballistic juice you can wring out of the 9mm Parabellum cartridge, and a slightly shorter 8-inch barrel that provides more overall compactness, while still giving the 9mm round a ballistic boost you get with a longer than conventional barrel. With a KAW Industries "sound forwarder" on both, they come across as being suppressed once the inside of the muzzle devices are allowed to become caked with carbon residue. My 10-inch pistol is actually quieter than my 18" barreled Ruger 10/22 rifle! And that's using a 124 gr. Sierra bullet!
I really love the concept first magwell insert I've seen that uses glock mags and not the old colt mags. But for $200 it is not what I thought, for $250 someone can buy a complete glock mag lower. Again love the design and idea, surprised no one has done this before now but the price point would have to come down to make it a feasible option instead of just building a complete dedicated PCC for $50-100 more.
Good honest review. I really like that you showed the other unit you have broke. Sometimes I wonder how many guys leave stuff like that out of the video to keep the manufacturers happy. If they know what's good for them, they (the manufacturers of that piece) will take that as constructive criticism.
We HAVE taken the constructive criticism and we thank all of you. Having said that, the price has been lowered to 179.99 and the mag release is now being machined from 4140 billet steel
We at stern defense have literally read all these comments and have spent the last week reengineering the mag release, and will now be made from 4140 steel and the price has been dropped to 179.99
I was reading reviews on sylvan arms and stern defense adapter for my 9mm FTM upper. They ran holiday special on.sylvan for 120 and I tried it. When received it, it seemed a little loose in mag well and on a glock 17 mag it stove piped 3 times. I sent it back and got the stern defense for 179. The screw system locked it down tight in the magwell. Ran 17 rd glock clip with no problems and it had the last round hold. Even though little more I am glad I got the stern defense. It is worth the extra and don't have to worry about jams and look forward to fun shooting without frustration.
Dylan Nelson you realize you still gotta build your lower in 556 and THEN buy this for $200 and screw it in each time you wanna use this right? Not to mention you gotta get a complete upper and barrel to use for 9mm. Might as well build a new rifle/pistol.
But this way if you have an SBRed lower you can just pop this in it and slap on a short 9mm upper instead of having to go through a long waiting process.
What I want to know is if someone already has a 9 mm Glock and an are in 5.56.. could they just go to like Palmetto State Armory and buy a cheap 9 mm AR upper and slap that on the ar-556 lower that they already have and use a stick mag from the Glock they already have or is there something in the lower of an AR that also has to be changed??
I haven't read up on this at all, with the longer barrel can you get more range and accuracy or are you still looking at about the same behavior of a pistol?
Perfect prepper gun for cheap rounds and easier accessibilty to resupply. Increases the ammo carry load for weight due to the ammo per unit weight drop
Does $190 shipped sound steep for an adapter? Sure. But if you think about the total cost of building out a dedicated decent Glock/Colt lower. You are going to drop $350-500 depending on lower brand and trigger choice. And if you want to SBR it, that is another $200+time. However, with this adapter you can drop it in to your current SBR lower with its top line trigger and your good to go with a 9mm upper. One way or another you are going to be spending some money to adapt or build a 9mm AR15. Now that cheap mag release is reason for pause. Will it be covered by warranty since it is known weak point with a high failure rate?
Bruh! Yes! This is a great product idea and definitely something I've been wanting. The price is steep but my main concern is that mag release. I'm sure it's something they will look at and improve after this video and hopefully be able to bring that cost down, but I definitely want one
Always being up front. No shills here. Ty for the vids an having our 6. I was honestly thinking about getting one even though it's about $99 more than I was comfortable paying. But after seeing the sub par release and knowing how rough I am on things I'm just going to go with a dedicated lower.
Hey brother you probably have to move the 9mm magazine adapter further up into the Magwell of the AR-15 Lower to make it hold the last round fired open. It's probably not up in there for enough that's why you have all those set screws so you get it up in there far enough so in the magazine runs dry it will lift up the ping pong paddle the bolt stop. Hope it helps brother
Would you re-review the Glasser Safety Slugs with your new slo-mo camera? It would be cool to see what they are actually doing with this awesome camera!!
the only problem with the Stern Defense AR-15 Glock mag adapter as all other makers of a magwell adapters, is they want to much for them, you can buy a dedicated 9mm lower or AR-9 Lower receiver for the same or if not a lower price
This is great, I already have my tax stamp so I can now put in this mag block, pop on a 7.5” 9mm upper and be ready to go! No need for another tax stamp!
Quick question ... I'm looking to get into the 9mm ar game. I thought 9mm needs a proprietary buffer? Yes? No? Whats the deal? As far as mag snappy goes, make the release out of steal. Problem solved. Sure, it will add an insignificant amount of weight but much better then having your mag release snapping off.
He said in the video that the lower is a registered SBR so he can legally transition from a 16" barrel to a shorter one but normally yes that would be illegal.
Easy solution, you need a sub machine gun , buy one. Anytime you try to use add ons to a different Cal. It always screws up , which is understandable to me. The only reason you would need to go from 556 to 9mm is to do some major room clearing. And that can be done with 556. Thanks for the vid, interesting.
timothy ducey if you visit our website we have some complete kits available, it you don't see the right barrel length for you please wait a few days and come back cause we are still in the process of getting all that together.
Hey Andrew, I was wondering if you could do a video about which firearms are effective against ancient/medieval armor and shields. I got this idea from the anime series "Gate."
To also counter my previous statement a bit if you already have an SBR'ed lower this would be a great thing, but it's also the exact same cost as another tax stamp so...
Even for CA it doesn't make a difference. 9mm uppers can easily be bought, a 9mm lower can be easily made from scratch, or a colt SMG style magwell conversion can be pinned into a standard rifle lower. Plus Colt SMG style magazines are more likely to be found in CA "illegally" since they can easily be stamped from sheet metal or folded from thermoplastic in comparison to glock magazines that have unnecessarily complex geometry for a home builder.
Because my lower already has a tax stamp. If I were to buy a complete new dedicated lower I would have to make it an AR pistol or purchase another tax stamp
![The Can Cannon [ EXTREME Full Review ]](http://i.ytimg.com/vi/yetUwvr803A/mqdefault.jpg)
![The Can Cannon [ EXTREME Full Review ]](/img/tr.png)
It's great to see Stern Defense taking issues into consideration and to make steps ALREADY to change them for the better. They saw this comment section and the thoughts of the viewers, and have already lowered their price a little, as well as making a stronger Mag Release for the unit, hopefully that version will be available soon. In the end we are all apart of the Firearms Community and it's great to see a company putting in effort to make the best product they can!
Please upload more vids
Our improved mag latch is now available! We have re-engineered the mag release to be flush with the mag well so it cannot be hit or caught on anything. Also, we have upgraded the material to 4140 alloy steel which has a very high yield and tensil strength.
GY6vids saw you’re knife throwing videos... I CHALLENGE you to throw a box cutter...good videos btw
Hey can you do a video on a very interesting type of ammo? .41 magnum silver tips.
what is your favorite knife. Which one should i get
Nice, concise review. Thanks for not being self-indulgent with excessive music, lead-in graphics , useless banter, etc. Please keep it up!!
I know my comments are coming more than four years after you posted this video, but I can almost guarantee your last round hold-open failures weren't the fault of the Stern unit. I'd bet it was the magazine followers. I've been running the hell out of two of those Stern AD9 conversion units for two years, and the only time I have a failure of the bolt closing after the last round is when I'm using genuine Glock magazines! And of the dozens of Glock mags I have, it's only three or four that give me this problem. I have more than 60 KCI Korean-made 33-round mags and they work perfectly. I'm speaking heresy here, but I'm not at all fond of Magpul's 17-round mags. They swell up when fully loaded and spend an afternoon in the trunk of my car during the summertime, and they aren't as "perfect" as most people think Magpul mags are. In fact, I have had flawless experiences with ProMag magazines, which I widely disparaged as junk. I'll say this: they're more like genuine Glock mags than are the pure polymer boxes MagPul produces. They are entirely metal internally, just like the real McCoy.
I loved your video, overall. I just wanted to point out your issue as being mag-related. I've built dozens and dozens of AR rifles and pistols, and nowadays, I don't even think about building a 9mm version with a dedicated lower receiver. Stern's device is so well engineered and built, and so rock solid reliable, I can't see sacrificing the versatility of the lower receiver assembly by limiting it to a pistol caliber only carbine (or pistol).
My two favorites both sport stainless barrels from Odin Works. A 10" version which milks every bit of ballistic juice you can wring out of the 9mm Parabellum cartridge, and a slightly shorter 8-inch barrel that provides more overall compactness, while still giving the 9mm round a ballistic boost you get with a longer than conventional barrel. With a KAW Industries "sound forwarder" on both, they come across as being suppressed once the inside of the muzzle devices are allowed to become caked with carbon residue. My 10-inch pistol is actually quieter than my 18" barreled Ruger 10/22 rifle! And that's using a 124 gr. Sierra bullet!
Overpriced, pot metal mag catch, and doesn't even work right with its own upper. Pass. But thanks for the honest review, mad respect
Chris Collins mag release has been changed from aluminum to 4140 steel. And price dropped to 179.99.
Jesse Setters NOW it's became interesting..
Glad you made a new video man I learn a lot from your videos your making a difference
john barber you're*
John Hook ?
I really love the concept first magwell insert I've seen that uses glock mags and not the old colt mags. But for $200 it is not what I thought, for $250 someone can buy a complete glock mag lower. Again love the design and idea, surprised no one has done this before now but the price point would have to come down to make it a feasible option instead of just building a complete dedicated PCC for $50-100 more.
100% agreed. It is a great idea and product(Minus fragile Mag Release)...the only real problem with it is price point, $200 is too high.
The price has been lowered to 179.99. and we are now making the mag release out of 4140 steel.
For $200 it needs to be flawless. Especially because you can just get an ar lower that already accepts 9mm for $150 or less nowadays
Yeah if they can get the price point down and fix some small issues...man this thing would be two thumbs up!
We at stern have spent the last week reengineering the mag release and now will be made from 4140 steel and have dropped the price to 179.99.
Good honest review. I really like that you showed the other unit you have broke. Sometimes I wonder how many guys leave stuff like that out of the video to keep the manufacturers happy. If they know what's good for them, they (the manufacturers of that piece) will take that as constructive criticism.
Steve Pro 2 A right on spot.
We HAVE taken the constructive criticism and we thank all of you. Having said that, the price has been lowered to 179.99 and the mag release is now being machined from 4140 billet steel
We at stern defense have literally read all these comments and have spent the last week reengineering the mag release, and will now be made from 4140 steel and the price has been dropped to 179.99
I was reading reviews on sylvan arms and stern defense adapter for my 9mm FTM upper. They ran holiday special on.sylvan for 120 and I tried it. When received it, it seemed a little loose in mag well and on a glock 17 mag it stove piped 3 times. I sent it back and got the stern defense for 179. The screw system locked it down tight in the magwell. Ran 17 rd glock clip with no problems and it had the last round hold. Even though little more I am glad I got the stern defense. It is worth the extra and don't have to worry about jams and look forward to fun shooting without frustration.
Yeah it’s a fun product for sure!
$200? You might as well build a dedicated lower for a little more.
But that's costs more. And you have to spend time building it. This is already built
Dylan Nelson you realize you still gotta build your lower in 556 and THEN buy this for $200 and screw it in each time you wanna use this right? Not to mention you gotta get a complete upper and barrel to use for 9mm. Might as well build a new rifle/pistol.
But this way if you have an SBRed lower you can just pop this in it and slap on a short 9mm upper instead of having to go through a long waiting process.
A dedicated 9mm lower is like$159
I️ just bought a PSA 9mm lower for 250$ complete why would you spend 200$ on a adapter.
Wow i have been waiting and hoping for something like this
I could’ve sworn you had 1M you honestly deserve 1M we’ll get there eventually
Little by little bud! Thanks for the support!
Any competitive alternatives to this product out there?
what knife should i get. What is the best one that i should get
Back to the drawing board for Stern. I applaud their efforts, though.
Yes! YOUR BACK!!!
Never left...I just post 1-3x per month.
GY6vids oh. My bad😂😂
Like your reviews. Unbiased and informative.
Forgive me if someone already asked this but did you also have to change the buffer to a 9mm specific one?
I love your videos they help me alot
What I want to know is if someone already has a 9 mm Glock and an are in 5.56.. could they just go to like Palmetto State Armory and buy a cheap 9 mm AR upper and slap that on the ar-556 lower that they already have and use a stick mag from the Glock they already have or is there something in the lower of an AR that also has to be changed??
I haven't read up on this at all, with the longer barrel can you get more range and accuracy or are you still looking at about the same behavior of a pistol?
Ive only seen about 100+FPS changes in speed going from 8in-16in, accuracy increase is very minimal in my experience past 50yards
I know this sounds stupid but if you put a mounted weight on the gun could it reduce the recoil by any amount?
Do you need to swap out the buffer weight when converting to 9mm?
I love your videos
Perfect prepper gun for cheap rounds and easier accessibilty to resupply. Increases the ammo carry load for weight due to the ammo per unit weight drop
Does $190 shipped sound steep for an adapter? Sure. But if you think about the total cost of building out a dedicated decent Glock/Colt lower. You are going to drop $350-500 depending on lower brand and trigger choice. And if you want to SBR it, that is another $200+time. However, with this adapter you can drop it in to your current SBR lower with its top line trigger and your good to go with a 9mm upper. One way or another you are going to be spending some money to adapt or build a 9mm AR15. Now that cheap mag release is reason for pause. Will it be covered by warranty since it is known weak point with a high failure rate?
Are you using the same buffer and spring for a 5.56/.223?
Bruh! Yes! This is a great product idea and definitely something I've been wanting. The price is steep but my main concern is that mag release. I'm sure it's something they will look at and improve after this video and hopefully be able to bring that cost down, but I definitely want one
We have listened to the concerns of the mag release and it is now being machined from 4140 steel. Also the price has been lowered to 179.99
This video showed up as an ad, whatever your doing keep it up.
It would be nice to see this for us southpaw shooters.
Always being up front. No shills here. Ty for the vids an having our 6. I was honestly thinking about getting one even though it's about $99 more than I was comfortable paying. But after seeing the sub par release and knowing how rough I am on things I'm just going to go with a dedicated lower.
Hey brother you probably have to move the 9mm magazine adapter further up into the Magwell of the AR-15 Lower to make it hold the last round fired open. It's probably not up in there for enough that's why you have all those set screws so you get it up in there far enough so in the magazine runs dry it will lift up the ping pong paddle the bolt stop. Hope it helps brother
Nope that's not it. The Adaptor is attached as it needs to be, and works with the other 9mm upper, just didn't work with the SternDefense upper.
Hulk Hogan?
Slaughter Round keep it on the down-low brother
I won't tell ;)
hahaahahahah
Would you re-review the Glasser Safety Slugs with your new slo-mo camera? It would be cool to see what they are actually doing with this awesome camera!!
the only problem with the Stern Defense AR-15 Glock mag adapter as all other makers of a magwell adapters, is they want to much for them, you can buy a dedicated 9mm lower or AR-9 Lower receiver for the same or if not a lower price
This is great, I already have my tax stamp so I can now put in this mag block, pop on a 7.5” 9mm upper and be ready to go! No need for another tax stamp!
Quick question ... I'm looking to get into the 9mm ar game. I thought 9mm needs a proprietary buffer? Yes? No? Whats the deal?
As far as mag snappy goes, make the release out of steal. Problem solved. Sure, it will add an insignificant amount of weight but much better then having your mag release snapping off.
A standard buffer will work, but an h3 buffer or heavier is recommended. The mag release is now being machined from 4140 billet steel.
Corey beat me to it.
If you buy anything but OEM glock mags, you need to rethink your life
ETS mags work just as well.
For less money you could have a dedicated lower for the price of that mag block
I’ve been waiting took you long enough I still love you though ❤️❤️❤️❤️
I post 1-3 x per month...glad I still get the LOVE though lol
Elephant in the room: what about changing out the buffer to a heavier buffer?
What kind of buffer spring is that? twang
LAV Mic is right in the middle of my chest...causes sounds to be a bit different.
so will work with 5.56/.223 platform miltech ?
I loved the video, I´m from Brazil but I love your channel. Here the citizen can not have a simple pistol.
So sad to hear this every time I talk with a Brazilian Fan;-( that sucks!
You don't have to change out the buffer to a heavier buffer? I've found 9mm needs a different buffer.
Do u have to replace buffer
Not related to the MAG-AD-9, but what barrel length was that pistol upper used in the video? Thanks in advance.
Can the 40 S&W mags work in it and possibly work with a 40 S&W upper?
How does this work with a Palmetto State Armory 9mm upper!
That's pretty cool Andrew, although I just can't get enough of my 300 BLK pistol. Just way too fun! Hope your doing good bud.
Doing well Grizz...yeah 300blk shooting subsonic with suppressor is always a blast...but 9mm makes the wallet feel better when going to the range lol.
Did you change the way you hold and shoot rifles
I'm an Ambidextrous shooter. (Proficient with left or right hand shooting)
9mm cartridge is likely not building enough gas pressure like a 5.56 to lock the bolt back.
Will this work on a ar 15 .22 if I get new upper
Hey bud, have you gotten your hands on a Maxim 9 yet? Would love to see a video on one!
I really want to see a ballistic test with hexolite 32 fragmenting slugs
Would you please hit the gel with the 458 Socom brass and brass hollow point?
I have. Look up "458 socom BUZZSAW round ballistic test"
Man I just can't wait to turn my ar15 into a 9mm
Really neat concept, but for the price of the kit, you may as well just purchase another AR.
Wonderful and beautiful
Good review man. Cool product. I'd be on it if it was more rugged.
the most vital part of the hole system they went cheap shit with it’ other than that cool set up
School Of Hard Knocks the mag release has been fixed and we at stern have started making it out of 4140 steel.
Damn that AR15 versatility... What's next they are going to come up with? 50cal? :D
The first set screw was set WAY tighter than the second. That's probably why the uppers were hit or miss
Using this setup, how does it perform (impact force, point of aim vs point of impact) at 100 yards, 200, 300?
Very cool bro. Love the vid
Does a ar-15 rifle lower+shoulder stock+ a upper with a less than 16" barrel= a potential nfa item?
He said in the video that the lower is a registered SBR so he can legally transition from a 16" barrel to a shorter one but normally yes that would be illegal.
Nice ,but way too pricey. Pro at adaptor is peanuts compare to this , one I got uses colt mags and runs like a champ.
I have an AKX9 that uses colt mags. I scored a few Tavor 9mm mags for 20 bucks each. Brand new and reliable as anything else...
Bald&curious
..m...
Ani bali
seems solid
Mrgunsngear Channe
The bcg is not designed to have a last round bolt hold open
Subscribed! I would like to see this side by side with the pending ATI adapter. I'm all over this as I can "reuse" my sbr lower for 9mm.
I think the adapter is a good idea, but the price and the broken adapter would disuade me.
2A Enthusiast ,
Price is 179.99
200$ might be a bit much, but it isn't the worst i guess! G'stuff, Andrew!
The price has been lowered to 179.99
MANNY~Em1 09900q
Great idea, bad price. Rather put that $200 towards a dedicated lower.
I just picked up a dedicated AR 9mm lower for $185.00 + tax. I'd much rather do that, than to pay $200 (or $180) for this. I'm just saying...
I have the site pulled up right now. The price for a complete kit are $600.
We're all waiting on the gx6 lynx review
im gonna be doing this soon because for competitions i cant shoot .556
Easy solution, you need a sub machine gun , buy one. Anytime you try to use add ons to a different Cal. It always screws up , which is understandable to me. The only reason you would need to go from 556 to 9mm is to do some major room clearing. And that can be done with 556. Thanks for the vid, interesting.
can you do muzzleloader ballistics tests?
What do you need to buy to make the conversion
A 9mm or 40 s&w bolt and barrel, and the mag adapter
A heavier buffer is recommended also
timothy ducey if you visit our website we have some complete kits available, it you don't see the right barrel length for you please wait a few days and come back cause we are still in the process of getting all that together.
Is it California legal?
depends on if you put it on a "featureless" AR rifle, and use only 10round magazines.
GY6vids ok well thank you
you can not have fun in california so yeah. might as well get ready to have a "featureless" youtube.
Who cares! California is a fuck tard state anyway. You guys put hippies in office and cry because they take your guns.
Well it’s fun so probably not.
Is that Jackal's pdw9?????
Hey Andrew, I was wondering if you could do a video about which firearms are effective against ancient/medieval armor and shields. I got this idea from the anime series "Gate."
Do ballistics on 10mm!!!
I love your vids but I'm still hoping you're going to do another now and arrow vid!
To also counter my previous statement a bit if you already have an SBR'ed lower this would be a great thing, but it's also the exact same cost as another tax stamp so...
I gots me an idea for a new vid. You should make a humonculus and shoot it.
Always stick with factory Glock mags. They are more expensive but they don’t fail.
Can you please review the fightlite raider?
you had me till the price, I can build a complete lower for a lot cheaper. Great looking produce. I like the idea
The price has been lowered to 179.99
Only me who noticed the tumbleweed @ 2:42 ?
Anyone else see the implications of this device for our brothers behind enemy lines in California?
Even for CA it doesn't make a difference. 9mm uppers can easily be bought, a 9mm lower can be easily made from scratch, or a colt SMG style magwell conversion can be pinned into a standard rifle lower. Plus Colt SMG style magazines are more likely to be found in CA "illegally" since they can easily be stamped from sheet metal or folded from thermoplastic in comparison to glock magazines that have unnecessarily complex geometry for a home builder.
why would I buy this for $200 when I can buy a 9mm at lower for about $150 ?
Complete? With non proprietary upper?
The price has been lowered to 179.99.
Because my lower already has a tax stamp. If I were to buy a complete new dedicated lower I would have to make it an AR pistol or purchase another tax stamp
Might be nice for a $25-33k colt m16 machinegun.
Anyone peep the tumble weed in the back lol
Nice
I enjoyed the review but its to much for me so I've decided to just get the complete 9mm ar pistol.
If they fixed that flimsy mag release I think it would be cool
Enduro EPICHUGGYBEAR we at stern defense have spent the last week reengineering the mag release lever and is now being made from 4140 steel.
.
Learned my mag lesson long ago. Don't use cheap mags.
50 Beowulf, 400g Winchester Platinum Tip.
shitty ass product after you told me the trigger release is that easy to break, especially for $200 msrp. But great real review of the product.
Doug21 price lowered to 179.99 and mag release is now being made from 4140 steel.
$535 to convert your ar15 5.56 to a 9mm.
Cool older vidoe
R u gale from Hungergames
Now, if someone would make such a mag well adapter that uses those nearly-free Suomi 36-round stick mags....
I've got the Stern Defense adapter