“In addition to selling a computer-numerically-controlled (CNC) mill which can complete unfinished lower receivers for AR-15 semi-auto rifles, Defense Distributed will now sell unfinished receivers for Glocks and single-stack M1911s. Using Defense Distributed’s mill, known as the Ghost Gunner, anyone with $1,600 and some basic milling knowledge can create the lower receiver of an AR-15 rifle.”