The M82A1 is Barrett's original semi-automatic .50 BMG rifle, the first semi-auto .50 BMG adopted by the US military. Recoil-operated with a rotating bolt, it is capable of anti-materiel effects at ranges exceeding 1,800 meters. Type: Rifle Action: Semi-Auto Caliber: .50 BMG Capacity: 10 Year introduced: 1989, USA Weight: 320 oz Overall length: 57" Status: Active Military use: Yes Intended use: Military, Law Enforcement