Showing posts with label 3d ar15. Show all posts
Showing posts with label 3d ar15. Show all posts

Tuesday, January 15, 2013

Defence Distributed Demonstrates 3D Printed "High Capacity" AR15 Magazine on youtube


Technology is making the desire to keep detachable magazines out of the hands of rampage shooters an impossibility. It has always been possible for people to make magazines of more than 10 rounds in home workshops. Magazines for AR15 rifles were made in jungle workshops by the Viet Cong. But in today's digital society, especially among young, hip, technologically advanced adults, nothing catches the attention like the ability to print working magazines for modern rifles by pressing a button on a 3D printer.

Defence distributed has now released digital files that enable people to print magazines for their AR15 rifle at home on their own 3D printer. Printing magazines is far easier than printing entire rifles; magazines are, in effect, only a box with a spring, and 3D printers make getting the dimensions correct as easy as pressing a button.

In the video, the magazine is demonstrated not only firing on semi-auto, but also on fully auto.

Have you decided that we must now have 3D printer control? That is rather difficult, as many of the latest at home 3D printers are capable of duplicating themselves. They are currently available for less than $1000, and the price is dropping.

If your buddy needs a 3D printer, it may take a week or so to print and assemble his, but it can be done without ordering it from a retail store or off of the net.

It appears that magazine control now makes less sense than outlawing kitchen knives.

Demonstration Video Link

Dean Weingarten

Here is a link to the source of the data files:

Defcad 30 round AR15 Magazine Link

Saturday, January 12, 2013

3D Printed AR15 Much Improved, More Reliable


Major improvements have been made in 3D printed AR15 rifles. The part of the rifle that is defined as a gun by federal law is the only part printed. The rest of the parts are commonly available on the free market.

People have made guns at home since guns were invented in the 1500’s or before. However, the ability to print out your own AR15 lower receiver at home, without having to use steel files, a grinder, or other home workshop tools, has caught the attention of the public in this digital age.

Defense Distributed is the organization that aims to make the promise of the Second Amendment a practical reality for everyman at the touch of a button. No longer will criminals in and out of government be able to be reasonably certain that their victims are unarmed.

The first AR15 lower printed by Defense Distributed was matched to a barrel chambered for the 5.7x28 cartridge, a pistol/rifle round less powerful than the more common .223. It failed after six rounds.

All of their design work and testing is now being done for and with the .223 cartridge. Several different printers and technologies have been tested. Stress analysis with sophisticated engineering design tools has been used to reduce the number of prototypes required. The lowers will now work reliably for 40-60 shots before failing. The highest round count so far has been over 80.

The failures occur at the rear take down pins, through to the hand grip.

Defense Distributed believes that their latest improvement will be reliable for 100 rounds. They expect to release the build files to the public in the next few weeks.

They will dedicate it to Joe Biden and company.

Dean Weingarten