Print 36 comment(s) - last by Piiman.. on Dec 29 at 3:39 PM

3D printed AR lower receiver doesn't meet expectations

One of the more interesting technologies for creating rapid prototypes and other items is 3D printing. 3D printing is capable of producing just about anything you can imagine from implantable cartilage for medical uses, to prototype parts and even weapons.

A project called Defense Distributed has been working on 3D printer files that allow users to create components to build their own guns using a 3D printer. A group of testers used a 3D printed gun part design from creator HaveBlue to produce an AR lower receiver (the lower receiver is a key component of the weapon that receives the rifle cartridge from the magazine) and headed to the gun range.

Unfortunately, it appears that recoil pressure in the completed weapon was too much for the buffer section of the 3D printed lower. The buffer is a section that separates the stock from the upper receiver reports NBC News. The part failed after firing only six shots. To make the failure even more embarrassing, the testers were using ammunition specifically designed for lower recoil.
The creator of the part claims to have printed his own and used it to fire hundreds of rounds.
While the firearm breaking in half while in operation seems to offer the potential for harm to the shooter and those nearby, the testers say that the only damage the operator faces is that of ego. When the weapon failed, the spring and buffer popped out of the tube and fell to the ground according to the testers.

Sources: NBC News, WikiWep DevBlog

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Scary possibilities
By craniumbox on 12/6/2012 8:10:49 AM , Rating: 0
The scary part about this, is that it did work even a few times. This would be worth it for someone committing a crime with a fire arm.
The weapon would have no serial number or registration (ownership), and easily destroyed after.
It would be similar to a burner phone but a gun version, Use then discard (or in this case use the destroy)

RE: Scary possibilities
By bobsmith1492 on 12/6/2012 9:31:19 AM , Rating: 2
Or you could just, you know, dump it in a lake. Much easier.

RE: Scary possibilities
By Schrag4 on 12/6/2012 12:01:05 PM , Rating: 3
How is that scary? Do you think criminals already only use guns that don't have a serial number? It's still much easier to just buy a firearm illegally Heck, the US govt was helping the illegal gun market along a couple of years ago - you may have heard about it. Also, the parts that cannot be printed, such as the barrel/chamber and the extractor are going to leave the evidence that will be needed to match spent bullets and casings to the gun.

Let me put it another way. It's quite simple to create the same part using a block of aluminum, a few templates, and a drill press, and that piece would probably last forever (not to mention it's perfectly legal for you to do in your garage). That tech has been around forever. Are you even more scared now?

RE: Scary possibilities
By kmmatney on 12/19/2012 5:32:12 PM , Rating: 5
RE: Scary possibilities
By talikarni on 12/20/12, Rating: -1
RE: Scary possibilities
By GreenChile on 12/20/2012 11:50:01 PM , Rating: 3
I was with you right up until that last bullet point. Where on Earth did you get that statistic from? You give gun owners a bad name with BS like that.

RE: Scary possibilities
By Piiman on 12/29/2012 3:35:19 PM , Rating: 1
"- Responsible gun owners that carry with them everywhere save more lives every week than these criminals and mass shooters kill every year."

really? Show me the proof. Personally I think you made it up.

"Game reviewers fought each other to write the most glowing coverage possible for the powerhouse Sony, MS systems. Reviewers flipped coins to see who would review the Nintendo Wii. The losers got stuck with the job." -- Andy Marken
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