F or those of you who aren’t familiar with the legendary M1911 single-action semiautomatic pistol and its .45 ACP (Automatic Colt Pistol) cartridge, it became the U.S. Armed Forces’ standard ...

Unlike previous 3D printed guns like the Liberator, this 3D printed version of an M1911 is made out of metal ... of rapid manufacturing – firing .45 ACP rounds, this gun will see 20,000 psi ...