The M1A fitted with a Sage International EBR (Enhanced Battle Rifle) chassis — a Picatinny-railed aluminum stock with adjustable length of pull and cheekpiece. The most common M1A tactical chassis configuration. Type: Rifle Action: Semi-Auto Caliber: .308 Winchester Capacity: 10 Year introduced: 2005, USA Weight: 108.8 oz Overall length: 42" Status: Active Intended use: Law Enforcement, Competition, Precision Shooting