The Christensen Arms CA-15 is a lightweight premium AR-15 featuring a carbon fiber wrapped stainless steel barrel, titanium muzzle brake, and skeletonized billet aluminum receivers. The combination of premium materials produces an AR-15 that weighs under 5.5 pounds fully assembled. Type: Semi-Auto Rifle Action: Direct Impingement Caliber: 5.56x45mm Capacity: 30 Year introduced: 2010, USA Weight: 5.5 oz Overall length: 32" Status: Active Intended use: Hunting, Range, Precision