The CR6920 is a commercial-series Colt AR-15 carbine built to the same specifications as the LE6920 but sold through standard retail distribution channels rather than law-enforcement-only distributors. Features 16.1-inch chrome-lined barrel, M4 profile, direct-impingement gas system, and mil-spec lower. The CR designation indicates commercial retail versus the LE law-enforcement designation. Type: Rifle Action: Semi-Automatic Caliber: 5.56 NATO Capacity: 30 Year introduced: 2010, USA Weight: 6.36 oz Overall length: 32.5" Status: Active Intended use: Sport Shooting, Tactical