This is a pistol version of the famous SIG 556 rifle. Fixed short stock, with a 10 inch barrel, standard markings on the receiver with a hooded blade front sight, full length accessory rail on top of the receiver, Sig-Tac STS081 mini red-dot sight, and standard ventilated handguard, ribbed grip, and fitted with a Sig-Tac arm brace. With original box, extra magazine, rail sections, and sight box.