Knights Armament SR-15 E3 Mod2 with 14.5-inch barrel. URX 4 M-LOK handguard. Pinned and welded KAC muzzle device. Enhanced extraction bolt. Compact duty configuration. Type: Rifle Action: Semi-Auto Caliber: 5.56 NATO Capacity: 30 Year introduced: 2015, USA Weight: 62.4 oz Overall length: 31.5" Status: Active Intended use: Duty, Defense, Patrol