Caliber: .223 Remington/5.56 NATO. Capacity: 10+1. Barrel: 16.5”. Weight: 8.9 lbs. Lengths: 33.9” to 37.68”. Stock: Black synthetic adjustable. Features: Uses the gas piston system found on the HK 416 and G26, which does not introduce propellant gases and carbon fouling into the rifle’s interior.