Great, now 3D printed rifles can fire 7.62mm NATO rounds
 

In 2013, Defense Distributed created the world's first 3D printed handgun, the .38-caliber Liberator. The following year, they unveiled an AR-15 receiver capable of firing hundreds of 5.56mm rounds without fail. This year, the team has been outdone b...

http://www.engadget.com/2015/03/26/g...=rss_truncated