If you are wondering what program I use for the creation of this video, please check the description. It should be included on every video in this series, if not let me know.
Fantastic video. Loved the explanation of how the pressure causes the brass to stick to the chamber, which would either tear the rim off or cause an explosion if the gun tries to extract too early. For a long time I just thought it was so it didn't eject the brass hard enough to maim or kill anyone standing next to it.
So here is the simplified explanation of how blowback operation works. It makes good use of Newton's third law of motion by using the opposite but equal reaction of the hot gasses pushing the bullet out the barrel to push the bolt back, eject the spent casing, and chamber the next round.
Exactly, but if you were to watch a version of this explanation with X-ray video on the Browning A5 (or the earlier 1930s version he allowed Remington to manufacture the Model 11) you would really see Newton’s Law. The ENTIRE barrel of the shotgun is spring loaded to enter into the breech and kick out the spent shell will throwing in another round. It’s such an absolutely ingenious method of creating a semi automatic firing mechanism that he won numerous US military contracts on variants of that one design alone. Pure genius.
Some extra info regarding why the Tec-9 was so popular with the bad guys: More than the affordability you mentioned, it was the amount of firepower for its small size. It worked well as an intimidator, yes, any gun is scary, but this one could just hose out bullets making your chance to escape way less (even if the person firing it can't aim very well). Fun fact : the AB10 was a neutered version of this gun, and therefore became just a big clumsy handgun.
This is probably one of the simplest designs. The only part that would take a bit of skill to make, is the bolt. The rest is fairly doable. With 3D printers, making one of these would be awesome.
The bolt in such a system is not cloesed at all. It starts opening exactly when the bullet starts to move due to conservation of momentum. The trick is actually to keep the blowback action slow enough that the bullet can go all the way down the barell before the thin part of the empty case looses its support in the chamber.
It would be awesome if you could do a similar video on the John Browning A5 with a barrel that is spring loaded to and ejects the spent shell. The classic and world famous flawless humpback’ design
@@OZTutoh Again I say, how? What force is acting on what surface to make that happen? Obviously gun go bang, slide go back. But how? Why? Anyone got a better answer than, " gun go bang, slide go back"?
@@OZTutoh So you don't know either. Example: With an Ar-15 the expanding gas flows through the gas tube, into the bcg and the pressure pushes against the bolt which pushes against the barrel etc etc. Question: In a blowback pistol, what pushes the slide back? Is it like a tab that sticks out from the slide and braces against the back of the bullet or something? I just want to know how the energy gets from the bullet to the slide.
@Howyadoinmon I was just wondering how and where there force got from the cartridge to the slide, but I think I figured it out eventually. I figure if the slide makes contact with a round to strip it from the mag and move it forward into the barrel, then thats where the contact happens going the other way. I just feel like that's an important step that always gets left out.
Definitely but not viable, because the weight of the bolt would have to increase as stronger cartridges (pressure from the powder) are used. This makes the gun heavier as you have a larger round, heavier bolt, longer barrel and the larger recoil. And the fact that you want it to be fully automatic, you're gonna need strong arms This is why this system's only used for pistol calibre guns, though people have tried doing this with rifle calibre guns, doubt they went far though. hope that answered your question!
Jiminez Arms .380 has the spring under the barrel and is out if business because someone didn't follow one of the 4 rules. Anecdotally, awesome gun: more reliable than a new highpoint or an old glock on my last target shoot.
You can but often not in straight blowback as higher pressure cartridges require a larger bolt or slide mass Straight blowback is mostly kept in SMGs, pistol caliber carbines, and pistols in low caliber carts these days
To add some ammunition have high chamber pressures that require more than having a heavy bolt and/or spring pressure isn't enough to contain the detonation and delayer systems or even locking lugs are needed
Yep. If you're going for bigger calibers, the cons overshadow the pros. Do note that the M1A1 Thompson also uses a straight blowback system, so you're not just limited to pistols.
Michael Jordon I do believe it has to do with shell length, pistol shells are much smaller than rifle rounds and can eject with less clearance and wouldn't take as long of a spring, as well as the chamber pressures not being too high along with the weight and recoil.
Jake Growler You'd be correct. Typically blowback rifles and shotguns are either Lever Delayed Blowback (FA Mas, most Beneili shotguns, most older ww1 era machine guns) or Roller Delayed Blowback (G3 and its variantions, Cemte, Tristar Shotguns) The delay keeps the bolt held back long enough for the round to come out of the chamber
Michael Jordon it is limited to pistol style calibers due the the chamber pressure. Rifle cartridges have much more powder for similar sized bullets so they create much more pressure. In order to counteract the massive increase in power the bolt weight would have to increase dramatically. A .50 bmg open bolt blowback would need over 50 lb of bolt weight to make it cycle without exploding.
Yes, that is partially the reason. The other part of why it is so bulky is what the slide is made out of and how it is made. It is cast out of a zinc alloy (zamak). Cast part are often times made thicker then required to try and prevent imperfections in the casting process weakening the part and the zinc alloy is more bulky per weight to the more traditional slide material steel.
I've been really confused about what exactly brings the bolt or slide back in non gas-operated systems. I still don't really get it This is going to sound really stupid, but is it the force of the gas on the casing that blows the casing back at the same time propelling the bullet, and that casing being blown back is what resets the slide/bolt?
Yes, that is exactly it. The old Physics saying "Every action has an opposite and equal reaction" explains it, like you already understand from what I see. The same force that propels the bullet forward propels the slide backwards.
@@EricFBG I've watched more videos like this and its not exactly the casing itself doing the work to cycle everything and then ejecting, it really *is* just the opposite force of the propulsion. I just had to kind of think about it until my brain accepted it and now it all makes sense. Thanks for affirming this
My dear friend ... extracting and ejecting are 2 different terms ... every gun needs an extractor, tho not every gun needs a ejector ... for example a lot of guns eject the cartriges by using the magazine or the next bullet that's comming up from the magazine, tho every gun needs a extractor which is pulling the cartrige in one direction in which it's meant to fly out. I ain't no specialist by any stretch of imagination but I think that might be the case, correct me if I'm wrong.
James Bond didn’t have much say in the matter. Q picked it and M made James take the PPK and leave behind his Beretta .25. In Dr No the book, James was actually pretty pissed about it
after viewing the slider mechanism and then seeing the tech, it's hard not to instantly love the tech, It VISUALLY MAKES SENSE, slider way too complicated gross, added complications. You just know when you see something and it works and makes sense!!!!!
I bought a 9mm Hi-point as a personal experiment, many years ago. The direct blow-back action is not good in pistols for anything except 380 and below. The 9mm slide is already too heavy, and noticeably worse to shoot that any other modern handgun I own in the same caliber or higher. In addition, the Hi-point had a ridiculous number of lands-and-grooves (>8). When I shot lead roundnose handloads through it, it just sprayed lead all over the place inside the barrel. It was not possible to clean it out in a reasonable amount of time without damaging the barrel. Hi-points, or any blow back pistols, are good throw-away guns. Shoot it, kill someone, then you also don't feel bad about disposing of the gun in the garbage. Because that's what they are. Garbage. I choose a higher path. I will only shoot and keep good guns, and if I need to shoot garbage, I will expect my high quality firearm back in my possession at the end of the legal inquisition. Now, this discussion of blow-back is only limited to pistol calibers. In rifle calibers, the direct-blowback action is actually pretty common and good. Like HK. Many consider it better than the AR and AK rifle action. That is another discussion...
You probably already know this, but for someone reading who might not, generally speaking, rifle calibers are much too powerful for simple direct blowback mechanisms that don't *also* incorporate a delaying mechanism to mitigate the large recoil energy - too much for just the weight of the bolt and the recoil spring alone to handle. HKs mitigate recoil energy by using a heavy bolt and a roller locking mechanism. ARs and AKs accomplish the same using a gas system and locking lugs on the bolt.
No Surrender my friend if i loaded the gun then started to eject the bullets manually by reloading is it normal to jam and how the last bullet will eject thanks for help
Hian Aboud take a pt 22...u can't eject a round by rackirackingslide..this gun is unique because it has a tip up barrel...but what gun are u talking exactly...the energy of the explosion in the cartridge...the bullet being pushed out the barrel...also causes the recoil that causes the explosion to push the shell, which pushes the slide in reverse...another round is loaded when the slide returns forward...in a locked breech the operations is delayed slightly, and has an ejector to grip the casing...at least that's what I always got...a glock would be an example of this...but there are some fixed barrel guns that aren't straight blowbakc operated...a beretta 92 is an example.
No Surrender thank you my friend.but i have a problem . if i load it then start to eject the bullets by reloading it usually jams and specially the last bullet because there isn't any bullet in the magazine to bush it is it normal?
Hian Aboud what pistol exactly are u talking about...if it is a tip up barrel gun like a .22 or .25 biretta or Taurus they are only designed to be chamber loaded with the barrel tipped open. no need to even operate the slide at all.if not a tip barrel designed gun...all u can do is run it and see...you won't manually be operating it as fast or with as much force as the gun would be cycling during shooting...so you probably dint have any issue
If you are wondering what program I use for the creation of this video, please check the description. It should be included on every video in this series, if not let me know.
MouseGunner not gonna lie super glad I saw this. Never even heard of this program
Will this work for a semi caseless bullet?
Me: interested in how guns and bullets work
ATF: it’s interesting that your interested
I am taking a gunsmith course right now. I have to do all types of searches on firearms. I hope I am not on some list by now hahaha
@@MrBum56 you are, no doubt about that lol. Also get into 3d printing, IMO that's the future of firearms.
@@MrBum56 if you aren’t on at least a few lists, I don’t know what your doing
Dear NSA. I plan on owning a M 60 machine gun. Now put me on a list. Hah
@@juliansoto2651it is, but that search combo is bound to cause a little bit of an uproar with the atf
Great and straightforward explanation!
Great video. It's amazing how simple the design is.
there's a reason they were invented before the modern assault rifle. I could make one with some shit from the plumming section of Home Depot.
@@somenbwithabadhistoryteach5872 like P.A. Luty.
This is how you want it to be if you want to produce a lot of these
Damn, just learned about that game, going to download it ASAP
Fantastic video. Loved the explanation of how the pressure causes the brass to stick to the chamber, which would either tear the rim off or cause an explosion if the gun tries to extract too early. For a long time I just thought it was so it didn't eject the brass hard enough to maim or kill anyone standing next to it.
So here is the simplified explanation of how blowback operation works. It makes good use of Newton's third law of motion by using the opposite but equal reaction of the hot gasses pushing the bullet out the barrel to push the bolt back, eject the spent casing, and chamber the next round.
Exactly,
but if you were to watch a version of this explanation with X-ray video on the Browning A5 (or the earlier 1930s version he allowed Remington to manufacture the Model 11) you would really see Newton’s Law. The ENTIRE barrel of the shotgun is spring loaded to enter into the breech and kick out the spent shell will throwing in another round.
It’s such an absolutely ingenious method of creating a semi automatic firing mechanism that he won numerous US military contracts on variants of that one design alone.
Pure genius.
Some extra info regarding why the Tec-9 was so popular with the bad guys: More than the affordability you mentioned, it was the amount of firepower for its small size. It worked well as an intimidator, yes, any gun is scary, but this one could just hose out bullets making your chance to escape way less (even if the person firing it can't aim very well). Fun fact : the AB10 was a neutered version of this gun, and therefore became just a big clumsy handgun.
Thank you. I am studying gun design and this was very interesting.
i love the tec-9. I think its simplicity is its genius
I am taking a forensic class: Firearms and Toolmarks, and your explanation and X-ray videos have helped immensely!!!
This is probably one of the simplest designs. The only part that would take a bit of skill to make, is the bolt. The rest is fairly doable. With 3D printers, making one of these would be awesome.
Freeman’s ghetto blaster. Been a thing for a while now
😳 does somebody have plans?
I’d hope not lol
Dang that was one awesome, informational and educational video. Thanks for making it!
The bolt in such a system is not cloesed at all. It starts opening exactly when the bullet starts to move due to conservation of momentum. The trick is actually to keep the blowback action slow enough that the bullet can go all the way down the barell before the thin part of the empty case looses its support in the chamber.
at 0.75 speed it sounds like you're a drunk professor
Finally got it, thanks for your vid!!
GREAT VIDEO !!!! MANY THANKS
The Tech 9 can be considered a form of birth control in the lower income neighborhood .
It would be awesome if you could do a similar video on the John Browning A5 with a barrel that is spring loaded to and ejects the spent shell. The classic and world famous flawless humpback’ design
Thanks for the video , could you do an explanation of the p90 please ?
Great video, very educative explanation.
4:20 How/where does the force of the combustion act against the slide to send it rearward? Ian Mccullums video skips over this step too.
The expanding gas in the cartridge pushes the cartridge backwards and that pushes the slide backwards as well.
@@OZTutoh Again I say, how? What force is acting on what surface to make that happen? Obviously gun go bang, slide go back. But how? Why? Anyone got a better answer than, " gun go bang, slide go back"?
@@BOBimusRex Newton's Third Law.
If you can't wrap your head around that, I can't help you.
@@OZTutoh So you don't know either.
Example: With an Ar-15 the expanding gas flows through the gas tube, into the bcg and the pressure pushes against the bolt which pushes against the barrel etc etc.
Question: In a blowback pistol, what pushes the slide back? Is it like a tab that sticks out from the slide and braces against the back of the bullet or something? I just want to know how the energy gets from the bullet to the slide.
@Howyadoinmon I was just wondering how and where there force got from the cartridge to the slide, but I think I figured it out eventually. I figure if the slide makes contact with a round to strip it from the mag and move it forward into the barrel, then thats where the contact happens going the other way. I just feel like that's an important step that always gets left out.
Thought the tec 9 is open bolt? Arent most compact smgs open bolt systems?
Would it be possible to make a straight blow back to assault rifle?
Definitely but not viable, because the weight of the bolt would have to increase as stronger cartridges (pressure from the powder) are used.
This makes the gun heavier as you have a larger round, heavier bolt, longer barrel and the larger recoil. And the fact that you want it to be fully automatic, you're gonna need strong arms
This is why this system's only used for pistol calibre guns, though people have tried doing this with rifle calibre guns, doubt they went far though.
hope that answered your question!
Anybody else notice that it wasn't a dual recoil spring on the second gun. It was the striker or firing pin or whatever you wanna call it
the striker's spring was acting as both, If I would have to guess.
Can 12 gauge shotgun can be blowback operated??
Yes - Benelli M4
@@theartofnigas3245 I thought Benellis were recoil operated
Edit: nvm they're inertia operated
Yes, but not many shotguns use this system, one notable example being the AA-12
Hey now I can make my own blowback zipgun! Good thing it’s legal as long as I don’t sell it!
Andy Roby speak up jackass
I can’t hear you
You can use a 3d printer for that.
@@landstalker7317 ** the smell of melting plastic fills the air**
you making a luty or a .22 staple?
You should do a vid on the Vector
.45
Please make video about how recoiless rifle work
Like Vector ? (I know Vector is a SMG)
@@mikunakano6622 no,like M3 Carl Gustav,it's usually used as anti tank gun
@@mikunakano6622 No that's delayed blowback iirc, he's talking about something like a Carl Gustav
Great vid mate. Well done and thanks.
How much does the bolt weight? Can't find info anywhere
very educative, thank you very much.
Would you do a video on a specific firearm? Maybe for a cost?
Jiminez Arms .380 has the spring under the barrel and is out if business because someone didn't follow one of the 4 rules.
Anecdotally, awesome gun: more reliable than a new highpoint or an old glock on my last target shoot.
You had me at Mouse Gunner
dude thank you so much. you spoke clearly and it was easy to follow
This could have been a beautiful four minute video
This is awesome
Great videos
Bonds ppk was in 32acp was it not?
I wonder if it’s possible for a tank to have a system like this
Can SMGs, semi-auto shotguns, semi/full auto rifles & machine guns work same way?
You can but often not in straight blowback as higher pressure cartridges require a larger bolt or slide mass
Straight blowback is mostly kept in SMGs, pistol caliber carbines, and pistols in low caliber carts these days
To add some ammunition have high chamber pressures that require more than having a heavy bolt and/or spring pressure isn't enough to contain the detonation and delayer systems or even locking lugs are needed
can you try the silenced Ruger 22LR
can u do how a PMR30 operates?
Did you make these?
Hi their can you animate specter sub machine gun?
Is straight blowback systems only for pistol calibers
Yep. If you're going for bigger calibers, the cons overshadow the pros. Do note that the M1A1 Thompson also uses a straight blowback system, so you're not just limited to pistols.
Michael Jordon I do believe it has to do with shell length, pistol shells are much smaller than rifle rounds and can eject with less clearance and wouldn't take as long of a spring, as well as the chamber pressures not being too high along with the weight and recoil.
Jake Growler You'd be correct. Typically blowback rifles and shotguns are either Lever Delayed Blowback (FA Mas, most Beneili shotguns, most older ww1 era machine guns) or Roller Delayed Blowback (G3 and its variantions, Cemte, Tristar Shotguns)
The delay keeps the bolt held back long enough for the round to come out of the chamber
Coneberry m1a1 is chambered in .45 acp which is a pistol caliber
Michael Jordon it is limited to pistol style calibers due the the chamber pressure. Rifle cartridges have much more powder for similar sized bullets so they create much more pressure. In order to counteract the massive increase in power the bolt weight would have to increase dramatically. A .50 bmg open bolt blowback would need over 50 lb of bolt weight to make it cycle without exploding.
The chamber indicator on the PPK needs addressing.
is that why 45 hi point is bulky
Yes, that is partially the reason. The other part of why it is so bulky is what the slide is made out of and how it is made. It is cast out of a zinc alloy (zamak). Cast part are often times made thicker then required to try and prevent imperfections in the casting process weakening the part and the zinc alloy is more bulky per weight to the more traditional slide material steel.
Im designing my own open bolt bullpup smg rn for fun
I've been really confused about what exactly brings the bolt or slide back in non gas-operated systems. I still don't really get it
This is going to sound really stupid, but is it the force of the gas on the casing that blows the casing back at the same time propelling the bullet, and that casing being blown back is what resets the slide/bolt?
Yes, that is exactly it. The old Physics saying "Every action has an opposite and equal reaction" explains it, like you already understand from what I see.
The same force that propels the bullet forward propels the slide backwards.
@@EricFBG I've watched more videos like this and its not exactly the casing itself doing the work to cycle everything and then ejecting, it really *is* just the opposite force of the propulsion. I just had to kind of think about it until my brain accepted it and now it all makes sense. Thanks for affirming this
@@EricFBG 0
How does a CO2 power blowback work ?
For an airsoft gun?
no such thing as that, you mean an airsoft guns or air guns, bullets propel with the gunpowder inside.
I have cz model z 25 cal it doesn't has an ejector how it ejects the case
Hian Aboud the recoil itself kicks it right out...my Taurus pt 22 is the same design. there is no delay.
My dear friend ... extracting and ejecting are 2 different terms ... every gun needs an extractor, tho not every gun needs a ejector ... for example a lot of guns eject the cartriges by using the magazine or the next bullet that's comming up from the magazine, tho every gun needs a extractor which is pulling the cartrige in one direction in which it's meant to fly out. I ain't no specialist by any stretch of imagination but I think that might be the case, correct me if I'm wrong.
I thought the Tec-9 was open bolt system
0:13 hehe pee pee good vid tho
O451
Jesus Christ Denton
The only thing that I don't like about auto-loaders is they get burnt powder everywhere.
V e ry good mate. A stronger spring would of been twice as strong t h ough
James Bond didn’t have much say in the matter. Q picked it and M made James take the PPK and leave behind his Beretta .25. In Dr No the book, James was actually pretty pissed about it
those menus look like Runescape
after viewing the slider mechanism and then seeing the tech, it's hard not to instantly love the tech, It VISUALLY MAKES SENSE, slider way too complicated gross, added complications. You just know when you see something and it works and makes sense!!!!!
what program is this?
Look at the description
simple, yet still a better mechanism that many modern rifles
This should have named SlinkySpring
Gostaria de fazer uma sub metralhadora
Ok nice post.
You can make blowback machine guns in your shed lol
I bought a 9mm Hi-point as a personal experiment, many years ago. The direct blow-back action is not good in pistols for anything except 380 and below. The 9mm slide is already too heavy, and noticeably worse to shoot that any other modern handgun I own in the same caliber or higher. In addition, the Hi-point had a ridiculous number of lands-and-grooves (>8). When I shot lead roundnose handloads through it, it just sprayed lead all over the place inside the barrel. It was not possible to clean it out in a reasonable amount of time without damaging the barrel. Hi-points, or any blow back pistols, are good throw-away guns. Shoot it, kill someone, then you also don't feel bad about disposing of the gun in the garbage. Because that's what they are. Garbage. I choose a higher path. I will only shoot and keep good guns, and if I need to shoot garbage, I will expect my high quality firearm back in my possession at the end of the legal inquisition.
Now, this discussion of blow-back is only limited to pistol calibers. In rifle calibers, the direct-blowback action is actually pretty common and good. Like HK. Many consider it better than the AR and AK rifle action. That is another discussion...
You probably already know this, but for someone reading who might not, generally speaking, rifle calibers are much too powerful for simple direct blowback mechanisms that don't *also* incorporate a delaying mechanism to mitigate the large recoil energy - too much for just the weight of the bolt and the recoil spring alone to handle.
HKs mitigate recoil energy by using a heavy bolt and a roller locking mechanism. ARs and AKs accomplish the same using a gas system and locking lugs on the bolt.
Thousanth like🤘
also...straight blowbacks don't need extractors...
No Surrender my friend if i loaded the gun then started to eject the bullets manually by reloading is it normal to jam and how the last bullet will eject thanks for help
Hian Aboud take a pt 22...u can't eject a round by rackirackingslide..this gun is unique because it has a tip up barrel...but what gun are u talking exactly...the energy of the explosion in the cartridge...the bullet being pushed out the barrel...also causes the recoil that causes the explosion to push the shell, which pushes the slide in reverse...another round is loaded when the slide returns forward...in a locked breech the operations is delayed slightly, and has an ejector to grip the casing...at least that's what I always got...a glock would be an example of this...but there are some fixed barrel guns that aren't straight blowbakc operated...a beretta 92 is an example.
No Surrender thank you my friend.but i have a problem . if i load it then start to eject the bullets by reloading it usually jams and specially the last bullet because there isn't any bullet in the magazine to bush it is it normal?
Hian Aboud what pistol exactly are u talking about...if it is a tip up barrel gun like a .22 or .25 biretta or Taurus they are only designed to be chamber loaded with the barrel tipped open. no need to even operate the slide at all.if not a tip barrel designed gun...all u can do is run it and see...you won't manually be operating it as fast or with as much force as the gun would be cycling during shooting...so you probably dint have any issue
No Surrender thank you .I'm talking about cz model z 6.35 mm old pistol made in 1950 its the same as baby Browning
Animation is great but presentation is useless. I wish there was just some arrows to tell me which direction the narrator is talking about.
This shows how pistol work , but not explaining how the blow back work ?
I can .ake a gun now.
U gun now
One of Veronica Rodriguez in spiritual says for kidnapping kids in sacrificing them evil with his tarot stuff I'm serious
"Take off your hat plea-"