• 3D printed (major part of a) rifle can endure firing 7.62mm NATO rounds
    48 replies, posted
[QUOTE][url]http://www.msn.com/en-us/news/technology/great-now-3d-printed-rifles-can-fire-762mm-nato-rounds/ar-AAa3Jvm[/url][/QUOTE] [QUOTE]In 2013, Defense Distributed created the world's first 3D printed handgun, the .38-caliber Liberator. The following year, they unveiled an AR-15 receiver capable of firing hundreds of 5.56mm rounds without fail. This year, the team has been outdone by a group of fabricators at Printed Firearm who have once again raised the bar. They've successfully crafted and test fired the receiver for a Colt CM109 modular battle rifle -- the AR-15's badass big brother. The CM109 is larger and heavier than the AR-15 as it is built to accommodate a larger caliber round: the 7.62 x 51mm NATO. 7.62mm rounds fly farther and strike with much more force than the 5.56mm, making them far more deadly. It also means that the lower receiver (the bit that holds all the firearm's moving parts) has to be both heavier and sturdier to in order to handle the increased mechanical stresses and harder recoil associated with using a bigger bullet.[/QUOTE]
Now we just have to 3D print soldiers
It's just a lower, not a full rifle. Well, this is Sensationalist Headlines.
[QUOTE=download;47405387]It's just a lower, not a full rifle. Well, this is Sensationalist Headlines.[/QUOTE] It's the only legally registered part that is controlled by federal regulation. Full rifle or not, it's pretty significant.
3D printed gun!* *barrel, stock, gas system, and magazine milled seperatly Not sure why you would want this though, its not even hard to obtain a regular receiver and its already not being tracked by some massive Illuminati database so big government can take your guns when they takeover and go full dictatorship
[B]The parts of [/B]3D printed Rifles [B]which aren't under significant stresses during operation of the weapon[/B] can [B]be used in conjunction with normal, machined metal parts to[/B] fire 7.62mm NATO rounds. [editline]27th March 2015[/editline] [QUOTE=catbarf;47405393]It's the only legally registered part that is controlled by federal regulation. Full rifle or not, it's pretty significant.[/QUOTE] Maybe it's time to start controlling more crucial parts of the weapon like the barrel, the entire and quite old "80% receiver" thing makes federal legislation sound kinda silly in that, anyway.
The thing is, it's perfectly legal to build yourself a gun for personal use. Afaik there are classes where you build an AK with an instructor telling you what to do every step of the way, which takes advantage of that. EDIT: Yeah here we go. [url]http://www.motherjones.com/politics/2013/05/ak-47-semi-automatic-rifle-building-party[/url] The writer is a bit of a tool though.
[QUOTE=Kybalt;47405707]The thing is, it's perfectly legal to build yourself a gun for personal use. Afaik there are classes where you build an AK with an instructor telling you what to do every step of the way, which takes advantage of that. EDIT: Yeah here we go. [url]http://www.motherjones.com/politics/2013/05/ak-47-semi-automatic-rifle-building-party[/url] The writer is a bit of a tool though.[/QUOTE] This is why I got a Bulgarian AK-74 kit, it seemed like a fun project and I honestly learned a lot about the rifle just looking at the parts. They're neat.
Now print me a bolt-carrier group. :v:
[QUOTE=Shadow801;47405374]Now we just have to 3D print soldiers[/QUOTE] Well, 3d printed robots can and surely will be a thing so why not?
Is it legal to build a gun in canada
[QUOTE=LieutenantLeo;47406181]Is it legal to build a gun in canada[/QUOTE] If you have a gun license, yes.
[QUOTE=download;47405387]It's just a lower, not a full rifle. Well, this is Sensationalist Headlines.[/QUOTE] In the United States, the Lower is the portion that is FFL controlled. The upper, the bits and bobs to put the lower together, the barrel, everything else can be shipped directly to your home. But a lower has to be shipped to an FFL if bought online. For all intents and purposes the lower is considered the firearm [editline]27th March 2015[/editline] [QUOTE=Awesomecaek;47405398] Maybe it's time to start controlling more crucial parts of the weapon like the barrel, the entire and quite old "80% receiver" thing makes federal legislation sound kinda silly in that, anyway.[/QUOTE] There's no need. Less than a hundredth of a percent of all gun related crimes are committed with these style of weapons, and no one is going to build their own to commit a crime.
[QUOTE=Awesomecaek;47405398]Maybe it's time to start controlling more crucial parts of the weapon like the barrel, the entire and quite old "80% receiver" thing makes federal legislation sound kinda silly in that, anyway.[/QUOTE] Making a barrel at home is a hell of a lot easier than making a receiver if you want to build an unregistered firearm. Even if you mean having both be registered, a smoothbore barrel is literally a tube- good luck enforcing that when any company can make a 5.5mm barrel and sell it with a wink and a nudge. Controlling a part that is explicitly a firearm component, houses the critical mechanism that makes a working firearm, and most importantly is extremely difficult or impossible to make at home without specialized tools and expertise is the only practical legal means of control over firearm manufacture and distribution. 3D printed receivers and cheap CNC mills like the Ghost Gunner throw a spanner in the works.
[QUOTE=Awesomecaek;47405398]Maybe it's time to start controlling more crucial parts of the weapon like the barrel, the entire and quite old "80% receiver" thing makes federal legislation sound kinda silly in that, anyway.[/QUOTE] Before we do that, let's ask ourselves what that would actually accomplish. Now this may just be me, but I can't off the top of my head think of a single crime that could possibly have been prevented by disallowing people to buy rifle barrels without an FFL. Snoberry Tea said it too, the actual number of these rifles used in crimes is minuscule, and I'd be willing to bet out of those actually used, one or two were custom built.
[QUOTE=catbarf;47406393]Making a barrel at home is a hell of a lot easier than making a receiver if you want to build an unregistered firearm. Even if you mean having both be registered, a smoothbore barrel is literally a tube- good luck enforcing that when any company can make a 5.5mm barrel and sell it with a wink and a nudge. Controlling a part that is explicitly a firearm component, houses the critical mechanism that makes a working firearm, and most importantly is extremely difficult or impossible to make at home without specialized tools and expertise is the only practical legal means of control over firearm manufacture and distribution. 3D printed receivers and cheap CNC mills like the Ghost Gunner throw a spanner in the works.[/QUOTE] making barrels is a hell of a lot harder than you think, anything over a couple inches long are going to be outside the realm of most garage based tinkerers because they won't have the equipment to mill a 10" barrel out of a billet of metal, and they have to get the tollerance correct because too big and the bullet will be loose in the barrel and jam up, or too small and the gun explodes a reciever is litterally a box that holds the bolt and firing mechanisms and most are just a hollowed out block of metal and easy to make im not saying that we should ban people from making their own guns, but these guys are overly optimistic and their motivation is bullshit
The last I heard in this field was that some independent company had made an ArmaLite receiver capable of firing 5-7 rounds [editline]27th March 2015[/editline] [video=youtube;RFhIxey5AXM]http://www.youtube.com/watch?v=RFhIxey5AXM[/video] Wow shit, never mind. Seems they got it up to .223 with 80 rounds reliability Also it's the same people who made the Cuomo magazine design
People act like this is a big issue, but you make a most basic gun (if you could call it that) out of some metal pipe.
[QUOTE=Sableye;47406426]making barrels is a hell of a lot harder than you think, anything over a couple inches long are going to be outside the realm of most garage based tinkerers because they won't have the equipment to mill a 10" barrel out of a billet of metal, and they have to get the tollerance correct because too big and the bullet will be loose in the barrel and jam up, or too small and the gun explodes a reciever is litterally a box that holds the bolt and firing mechanisms and most are just a hollowed out block of metal and easy to make[/QUOTE] That's absolutely not true at all. A smoothbore barrel can be made from just a section of pipe, and many designs for improvised weapons use off-the-shelf pipe as barrels. Granted, it's easier with a shotgun, but the Luty submachine gun in Expedient Homemade Firearms and the designs in the Rheinmetall guide both provide schematics for improvised 9mm submachine guns using pipe as the barrel. Too small a barrel causes overpressure, but lead bullets can swage to fit a small barrel- lead 12ga slugs are designed to swage through both the forcing cone of a shotgun and through a choke, changing shape significantly. Too large a barrel causes keyholing, but people have shot 5.45 through 5.56 barrels when Century fucked up their builds, with poor accuracy but no malfunction. The barrel is not hard. Conversely, a receiver requires either a machine-folded piece of steel, or a mill to shape one from a block, and either way a drill press is necessary to make the holes for internal components, and it has to be precise. You could build an improvised barrel for a single-shot AR with hand tools, but building an AR receiver from scratch with no machining expertise or equipment is damn near impossible even with an 80% receiver. From scratch, definitely impossible. The receiver is the only part that allows practical control of manufacture and distribution. [editline]27th March 2015[/editline] [QUOTE=Lf757;47406524]People act like this is a big issue, but you make a most basic gun (if you could call it that) out of some metal pipe.[/QUOTE] There is a world of difference between a single-shot weapon designed to let you kill someone to steal a better gun, and a full-fledged assault rifle complete with full auto. As for 'big issue', not really, but it's a huge step up from like Australian garage guns or Chechen specials.
Sweet, I can now print a lower to fire 308 rounds. Now I just need to buy an upper, all the internals for the lower, etc.
[url]http://www.northeastshooters.com/vbulletin/threads/179192-DIY-Shovel-AK-photo-tsunami-warning[/url]! I'll just leave this here [url]http://www.northeastshooters.com/vbulletin/threads/179192-DIY-Shovel-AK-photo-tsunami-warning[/url]! It's easier to make a gun then you'd think (especially some of the crudest ones) and in some of the countries that are restrictive of private ownership, you'd be surprised how well made some of them can be.
I want to 3D print my .959 JDJ
us doesn't need to worry about 3d printed guns, its all the countries where guns are not legal/v difficult to obtain that it needs to be worried about
[QUOTE=Pilot1215;47406570]Sweet, I can now print a lower to fire 308 rounds. Now I just need to buy an upper, all the internals for the lower, etc.[/QUOTE] .308 is actually a higher pressure than 7.62x51. Not all guns that fire 7.62 are capable of safely firing .308. I would imagine .308 in this setup would likely not end well.
[QUOTE=Mr. Foster;47406990].308 is actually a higher pressure than 7.62x51. Not all guns that fire 7.62 are capable of safely firing .308. I would imagine .308 in this setup would likely not end well.[/QUOTE] There's the HK 51B and the AR-10 which is compatible with both variants.
I am really getting sick of hearing about Defense Distributed. They are not doing anything impressive or interesting, as far as I'm concerned. I've seen better guns built in people's garages. The media keeps fawning and/or obsessing over them because the story is the perfect conversion of the public obsession with technology and gun politics. They aren't getting all this attention because they're doing anything particularly meritorious.
[QUOTE=Sableye;47406426]making barrels is a hell of a lot harder than you think, anything over a couple inches long are going to be outside the realm of most garage based tinkerers because they won't have the equipment to mill a 10" barrel out of a billet of metal, and they have to get the tollerance correct because too big and the bullet will be loose in the barrel and jam up, or too small and the gun explodes a reciever is litterally a box that holds the bolt and firing mechanisms and most are just a hollowed out block of metal and easy to make im not saying that we should ban people from making their own guns, but these guys are overly optimistic and their motivation is bullshit[/QUOTE] Nothing is outside the realm of garage based tinkerers. If someone wants to make a gun they're gonna make a gun. Some dude made an AK-47 out of a fucking shovel, and I've seen countless FUNCTIONING guns made of, literally, wood and metal scraps. Look up Chechen Homemade Weapons on google, or hell just "garage guns" or something similar.
[QUOTE=Mr. Foster;47406990].308 is actually a higher pressure than 7.62x51. Not all guns that fire 7.62 are capable of safely firing .308. I would imagine .308 in this setup would likely not end well.[/QUOTE] I had forgot that, thought 51's had higher pressures, thank you for clearing that up. Anyway, with that said, I would like to see how one of these would hold up to a .308 then.
[QUOTE=Used Car Salesman;47407013]I've seen better guns built in people's garages. [/QUOTE] By people with the equipment, time, and know-how to do it. As opposed to literally anyone with a 3D printer, few hours, and Internet access. Which is exactly the point and I don't see why people don't seem to understand this. Yes, anyone can make a gun. Not everyone can make a gun easily and conveniently, let alone one which functions every bit as well as the 'real thing'.
[QUOTE=catbarf;47407092]By people with the equipment, time, and know-how to do it. As opposed to literally anyone with a 3D printer, few hours, and Internet access. Which is exactly the point and I don't see why people don't seem to understand this. Yes, anyone can make a gun. Not everyone can make a gun easily and conveniently, let alone one which functions every bit as well as the 'real thing'.[/QUOTE] I'm not a hoplophobe so I'm not afraid of guns, but if I were, I'd be a lot more worried about a man in a garage with wood, metal scraps, pipes, and some basic tools than a man with a several thousand dollar 3D printer. We don't need to be worried about 3D printed guns, AT ALL. Not a single fucking person is going to use them to make guns for crimes, now when they can just BUY a gun for 1/3 the cost or less of the 3D printer.
Sorry, you need to Log In to post a reply to this thread.