This new Bushmaster XM15-E2S rifle fires the .223 round. It has a 16" barrel with an overall matte black finish. This semi-auto rifle comes with a 6 position collapsible stock, flattop optics ready receiver with 2 small picatinny risers, bayonet lug, hardcase, sling, and lock. This Bushmaster rifle is the ORC M4A3 style and comes with 1 30 rd. mag.