Sharps bros overthrow lower. With cmg upgraded trigger with anti walk pins. 5.56. Has a mas defense 20 inch upper new as well. Very low round count. Only about 50 rounds thru it.has an extended bolt release. Warhammer charging handle. Magpul grip and stock on it.bushnell scope on it. Really nice gun. Fires great. 1100 obo. Located in league city. 281850685six. Text joe. Will need valid dl and a bill of sale.