SA80

The SA80 (Small Arms for the 1980s) is a British family of 5.56×45mm NATO small arms. It is a selective fire, gas-operated assault rifle. Mechanically, it has been derived from the Armalite AR-18, which had been manufactured under license in the UK by Sterling Armaments Company. Elements of its design, in particular the bullpup configuration, were inspired by the earlier EM-2 rifle. The first prototypes were tried in 1976, and production ended in 1994. It is due to remain in service until 2025.

The L85 rifle variant of the SA80 family has been the standard issue service rifle of the British Armed Forces since 1987, replacing the L1A1 variant of the FN FAL. The improved L85A2 remains in service today. The remainder of the family comprises the L86 Light Support Weapon, the short-barrelled L22 carbine and the L98 Cadet rifle.

The SA80 was the last in a long line of British weapons (including the Lee–Enfield family) to come from the Royal Small Arms Factory, the national arms development and production facility at Enfield Lock.