This handguard is ultralight and is monolithic with any mil-spec upper receiver. Optimal length and design to make any 9MM or 5.56/.223 pistol look outstanding. not only is the design structurally strong, but the Type III Hard coat anodizing adds the scratch resistance and durability you need. The hand guard slips over the barrel nut and is fastened by 6 Torx head screws. Two each at the, 3, 6, and 9 O’clock positions.