Barrett's direct impingement AR-15 with proprietary upper and chrome-lined barrel. Barrett's entry into the 5.56 carbine market. Type: Carbine Action: Semi-Automatic Caliber: 5.56x45mm NATO Capacity: 30 Year introduced: 2007, USA Weight: 112 oz Overall length: 32" Status: Active Intended use: Tactical, Law Enforcement, Sport Shooting