X Products Lawman Side Charging Complete Upper 5.56mm NATO 16.1 Inch Threaded Barrel Salt Bath Nitride Finish 12 Inch Fortis Rail Black

Billet extruded 6061 aluminum machined to exact tolerances, side charging upper receiver. Drop-in system. Machined and profiled to work with all M4 pattern upper forend rails that are designed for use on mil spec uppers. Includes special cam pin for installation. Comes with a forward assist, barrel nut, barrel, gas system, and forend rail. 16.1 inch 4140 chromoly salt bath nitrided barrel with 1:7 inch twist rate and threaded muzzle 1/2-28 tpi. Fortis Rev twelve inch rail. Fixed gas system. Prefers bullets heavier than 62 grain.