The era of the 3D printed gun is here. Cody Wilson’s Defense Distributed kicked it off by creating the world’s first 3D-printed handgun: the Liberator. “The following year, they unveiled an AR-15 receiver capable of firing hundreds of 5.56mm rounds without fail,” engadget.com reports. “This year, designers from FOSSCAD has (sic) raised the bar yet again. They’ve successfully crafted and test fired the receiver for a Colt CM109 modular battle rifle — the AR-15’s badass big brother.” Badass? I don’t think they’re using that word in a complimentary fashion . . .