Steyr AUG

The rifle that made the bullpup mainstream — Austria's Steyr AUG (Armee-Universal-Gewehr, "army universal rifle") was a decade or more ahead of its time when it entered service in 1978: a compact, futuristic polymer weapon that put the action behind the trigger to fit a full-length barrel in a short package, with a built-in optical sight and quick-change barrels turning one rifle into a carbine, a marksman's weapon or a light support gun. Nearly half a century on it is still produced and still serving, found in some 47 countries — Austria's single most influential and recognizable weapon.

Overview

The Steyr AUG is a bullpup 5.56×45mm NATO assault rifle developed by Steyr Mannlicher (now Steyr Arms) of Austria, adopted by the Austrian Armed Forces as the StG 77 in the late 1970s. "Bullpup" means the magazine and action sit behind the trigger group, so the rifle can carry a long barrel for full velocity and accuracy in an overall length far shorter than a conventional rifle. The AUG paired that layout with a then-radical mix of features — an integral optical sight, extensive use of polymer, a modular quick-change barrel system, ambidextrous controls and a progressive trigger (squeeze partway for semi-auto, fully for automatic) — that made it look and work like a weapon from a later decade. It is the design that proved the bullpup concept for Western armies, and it remains, with the Glock pistol, one of Austria's two globally significant small arms.

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