This new Springfield Armory 1911 Marine Corps Loader Operator pistol fires the .45acp round. It has a 5" barrel with a matte black slide and OD green frame. This semi-auto pistol has an under barrel rail, an ambidextrous safety, and Trijicon night sights. It comes with a holster, a double magazine carrier, hard case, Pachmayr grips, and two 7 round magazines. This is Springfield Armory model #PX9105MLP.