The Steyr AUG is an Austrian assault rifle introduced in 1977. It is designed on a bullpup principal which makes it 25% shorter than other rifles with similar barrel lengths without compromising ballistic performance. It comes factory equipped with a low amplitude optical sight/carrying handle. The AUG is generally regarded as a modern ergonomic design for a combat rifle and is well liked by the Austrian, Australian and New Zealand soldiers who carry it. It has also been used by the British SAS and other organisations in a counter-terror role.
Barrels of the Steyr AUG can be changed quickly and easily, changing the rifle from a carbine (short rifle) to an assual rifle (medium barrel) to a Light Machine Gun or heavy sniper barrel.