BCM BFH 20-inch A2-style full-length rifle. Rifle-length gas system for softer recoil. Chrome-lined mil-spec barrel. Type: Semi-Auto Rifle Action: Semi-Automatic Caliber: 5.56x45mm Capacity: 30 Year introduced: 2010, USA Weight: 72 oz Overall length: 39.5" Status: Active Intended use: Precision/Service Rifle