BCM close-quarters battle configuration with a 10.5" barrel, suppressor-optimized, and carbine gas system. Closest civilian equivalent to SOCOM CQB configuration. Type: Rifle Action: Semi-Automatic Caliber: 5.56 NATO Capacity: 30 Year introduced: 2006, USA Weight: 112 oz Overall length: 26.5" Status: Active Intended use: sport, home defense