Defense Distributed: Creators of the 3D-printed Liberator pistol and the Ghost Gunner micro-CNC. The Ghost Gunner 3 is sold with the code to complete popular 80% lower receivers, including the AR-15, AR-.308, AR-9, 1911 and Polymer80 frames. 
Working to expand the Second Amendment in its purest form, Defense Distributed makes hardware and software for the independent and private production of firearms. (less)