Entry-level MMR with a 16-inch barrel, standard M4 handguard, and a feature set trimmed to compete on price. Lacks the free-float handguard of the Tactical but uses the same chrome-lined barrel and mil-spec lower parts kit. Type: Semi-Auto Rifle Action: Gas-Operated Caliber: 5.56x45mm Capacity: 30 Year introduced: 2012, USA Weight: 6.8 oz Overall length: 35.2" Status: Active Intended use: Home Defense, Range