Profense site Minigun page on DeGroat Tactical Armaments site U.S. Army TACOM Qualifications Report M134 Minigun at Modern Firearms Exploded diagrams and specifications GAU-17 info at NavWeaps.com Specs on a variety of minigun models 1985 Patent on a Handheld Minigun Design Video showing a CG animation of the firing process of a minigun Helicopter mounted applications video on Military.com 7.62 mm machine guns 7.62×51mm NATO firearms Aircraft guns American inventions Multi-barrel machine guns Military equipment introduced in the 1960s Rotary machine guns