The LaRue Tactical OBR in 7.62x51mm with a 16-inch barrel applies the same precision-manufacturing philosophy to the AR-10 platform. It is regarded as one of the most accurate factory-built semi-auto .308 rifles, used by competitive shooters and precision-focused end users. Type: Semi-Auto Rifle Action: Direct Impingement Caliber: 7.62x51mm Capacity: 20 Year introduced: 2007, USA Weight: 9.5 oz Overall length: 35.5" Status: Active Intended use: Precision, Range, Competition