BCM Jack Carbine named for BCM co-founder Paul Buffoni. 16-inch mid-length gas system. Stripped-down duty carbine optimized for reliability under adverse conditions. Type: Rifle Action: Semi-Auto Caliber: 5.56 NATO Capacity: 30 Year introduced: 2016, USA Weight: 62 oz Overall length: 32.5" Status: Active Intended use: Duty, Defense, Patrol