The controversial gun design group Defense Distributed recently published a video of their updated 3D-printed 30-round AR-15 magazine. This new design is much more resilient and less failure-prone then their first attempt, which shattered after just a few cycles.
Their video showing the magazine working fine with an M16 firing in full-auto was uploaded to YouTube then later pulled. YouTube stated the video was a violation of their “policy against spam, scams, and commercially deceptive content,” but then later restored.
On the Wiki Weapon Project blog, Defense Distributed responded, saying “Yes, YouTube removed this video because permissive liberals flagged it as inappropriate. Please steal this and put it everywhere before it is again taken down.”
The updated magazine — which Defense Distributed has nicknamed “the Cuomo” after the pro-gun control New York governor pushed through a 7-round magazine capacity limit and a hard ban on magazines with capacities greater than 10 — showcases how easy it is (or will be, once DefDist gets the kinks worked out) to make your own magazines, regardless of public availability.
These magazines lasted several hundred cycles without significant problems. This is their third magazine design and if you have a 3D printer you can download the files and make one yourself at their DEFCAD website.
They are also working on a 40-round AK-47 magazine.
For now it would seem that with these plans and a commercial 3D printer, anyone can manufacture the non-metallic parts of an AR magazine that’s about on par with semi-disposable magazines, such as Thermold mags.
Defense Distributed isn’t alone working on and testing these magazine designs. In the overlapping communities of gunsmithing and 3D printing, others have printed out their own Cuomos.
This particular video is demonstrating another prototype, the FS-30. It is named after Sen. Dianne Feinstein.