The Steyr AUG is an Austrian bull-pup 5.56×45mm NATO assault rifle, designed in the 1960s by Steyr Mannlicher GmbH & Co KG (formerly Steyr-Daimler-Puch). The AUG (Armee-Universal-Gewehr—"universal army rifle") was adopted by the Austrian Army as the StG 77 (Sturmgewehr 77) in 1978, where it replaced the 7.62×51mm StG 58 automatic rifle (a license-built FN FAL). In production since 1978, it is the standard small arm of the Austrian Bundesheer and various national police units.
The rifle and its variants have also been adopted by the armed forces of Argentina, Australia, Bolivia, Ecuador, Ireland, Luxembourg, Malaysia, New Zealand, Oman, Saudi Arabia, Tunisia, Pakistan, the Falkland Islands Defense Force and the U.S. Immigration and Customs Enforcement.
Technical Data Weight 3.6 kg (7.9 lb) (Standard) Length 790 mm (31.1 in) (Standard) Barrel length 508 mm (20.0 in) (Standard) Cartridge 9×19mm Parabellum Action Gas-operated, rotating bolt Rate of fire 680–750 rounds/min Muzzle velocity Standard rifle: 970 m/s (3,182 ft/s) Effective firing range 300 metres (980 ft) Maximum firing range 500 metres (1,600 ft) Feed system 9×19mm Parabellum: 25 or 32-round detachable MPi 69 box magazine