The Colt Defense CR6920 MP-B is a Magpul-package commercial-channel Colt AR-15, featuring a 16.1-inch chrome-lined barrel with the standard mil-spec components of the CR6920 combined with factory Magpul MOE furniture. Bridges the CR commercial and LE market positioning by providing LE-equivalent construction with the premium furniture package that buyers were adding to standard CR6920s. Type: Rifle Action: Semi-Automatic Caliber: 5.56 NATO Capacity: 30 Year introduced: 2016, USA Weight: 6.7 oz Overall length: 32.5" Status: Discontinued Intended use: Sport Shooting, Tactical