The Bushmaster Carbon-15 Type 97S is a pistol configuration of the carbon-fiber composite receiver Carbon-15 platform, featuring a 7.25-inch barrel and no stock. The carbon-fiber lower and upper reduce weight to under 4 pounds for the pistol configuration. Classified as a pistol under federal law. Represents one of the lightest production AR-15-pattern pistols ever manufactured. Type: Pistol Action: Semi-Automatic Caliber: 5.56 NATO Capacity: 30 Year introduced: 2004, USA Weight: 3.8 oz Overall length: 21" Status: Discontinued Intended use: Tactical, Sport Shooting