Steyr AUG, first introduced in 1977, is a unique family of firearms designed and manufactured by Steyr Mannlicher of Austrian company.
Meaning "Universal Army Rifle", AUG is an acronym for Armee-Universal-Gewehr. The weapon is often used to refer to a unique version, specifically the initial version which was 5.56 mm NATO bullpup assault rifle, featuring a distinctive integrated scope and green frame. The light machine gun has since led to the creation of a variety of related weapons including a designated marksman rifle, a submachine gun, and light machine guns. The Steyr has been adopted by a number of organizations and armed forces and is the standard service rifle of Australia, Austria, New Zealand, Ireland, Luxembourg, and at one time Malaysia.