AR-15 carbine from Diamondback. Mil-spec lower, mid-length gas system, and a 16" barrel in a standard M4 configuration. Type: Rifle Action: Semi-Automatic Caliber: 5.56x45mm NATO Capacity: 30 Year introduced: 2012, USA Weight: 128 oz Overall length: 32.5" Status: Active Intended use: sport, home defense