L123A2 Underbarrel Grenade Launcher.
SUSAT Scope 4x magnification.
In service: 1985 - Present.
Gas Operated, Rotating Bolt.
Effective Range: 600m
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.