The SU16 series is designed, engineered and crafted to be the perfect everyday Sport Utility rifle. These gas piston operated, semi-auto rifles accept standard AR-15 magazines, with some models that store two spare, proprietary magazines in the stock. They feature iron sights and an integrated Picatinny-style rail on top of the receiver to mount your favorite optic. SU16 has a gas-piston operated semi-auto action which keeps fouling to a minimum. Thanks to the long travel of the bolt carrier, the SU16 series rifles shoot smooth, flat and reliably.