CMMG Dissent MK4 Upper Group 5.56 16.1" Barrel, Black - 55BC737HCA

Complete AR-15 upper receiver group featuring a 16.1" 5.56mm barrel with CMMG's patent-pending direct impingement compact action design. Compatible with mil-spec lower receivers; includes 1913 Picatinny rear end plate for mounting accessories. Suitable for both pistol and carbine configurations.