The M82A1 was the USMC's first large-caliber semi-automatic anti-materiel rifle, seeing action in Desert Storm. Used to detonate mines, disable aircraft, and engage targets at extreme range. The basis for the later M107. Type: Semi-Auto Rifle Action: Gas-Operated Caliber: 50 BMG Capacity: 10 Year introduced: 1990, USA Weight: 32.7 oz Overall length: 57" Status: Active Military use: Yes Intended use: Military, Anti-Materiel, Sniper