PSD IC 5.56mm NATO 8.5 Inch Barrel Flash Hider Skirmish Sights Magpul Grip Black Parkerized Finish 30 Round. Short stroke gas piston operating system. Features include a pistol buffer tube, Magpul grip, LWRC Skirmish sights and fully ambidextrous controls. Ambidextrous charging handle. 8.5 inch threaded barrel with flash hider. Ni-Cor treated bolt carrier group and Ni-Cor treated trigger group. Includes rail kit, bungee sling, gun lock and 30-round Magpul P-mag. Parkerized finish.