28 March 2015

Some Guys Just Made a Heavier-Caliber 3D-Printed Gun

by KYLE MIZOKAMI

In March, a Website dedicated to 3D-printing firearms announced one of its members had developed a lower receiver for a Colt CM901 rifle. It’s a small — but evolutionary — step toward the development of firearms that pretty much anyone can download off the Internet.

The CM901 is the bigger, badder brother of the ubiquitous AR-15. The CM901 has a similar design, but fires the heavier and more powerful 7.62-millimeter bullet, resulting in greater range and killing power.

A group of gunsmiths associated with PrintedFirearm.com developed the CM901 lower receiver and uploaded an animated gif of a live-fire test. The clip is five seconds long.
3-D printed CM901 lower receiver in action. PrintedFirearm.com gif

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