The ATI Tactical Omni Maxx Hybrid AR-15 Pistol 5.56/223 7.5" has a polymer upper/lower hybrid, aluminum 7" Keymod rail, polymer lower receiver, polymer upper receiver and is optics-ready. Extremely reliable while still being light, tough, and highly maneuverable. Accepts all standard AR-15 accessories. These pistol have polymer lower parts kits manufactured by Plum Crazy. Ships complete with one 30 round magazine.