lukehopewell1 writes "'Untraceable, undetectable, cheap and freely available.' That's how Australian police have described the 3D-printable gun known as The Liberator today as they announce that they will be seeking to make the download, construction and possession of these weapons illegal. In their tests, Police printed the 15 parts required to assemble The Liberator in 27 hours and assembled it within 60 seconds with a firing pin fashioned out of a steel nail. The two guns were test fired into a block of resin designed to simulate human muscle, and the first bullet penetrated the resin block up to 17 centimeters. NSW Police Ballistics division confirm that it would be a fatal wound if pointed at someone."