The original UZI SMG was updated and modernized many times during the years since its development half a century ago. The UZI pistol version is a very popular weapon for bodyguards and many groups guarding Heads of State and executives world-wide and is widely used by military and law-enforcement special forces operators. Walther is the exclusive manufacturer of the UZI semi-automatic pistol as a tactical rimfire replica. All dimensions are held to original specifications where possible. Features on the Walther UZI Pistol included: a threaded muzzle, an elevation-adjustable front sight, a windage-adjustable rear sight, a metal receiver, a grip safety, and a lower picatinny rail. The barrel has six grooves and a 1 in 13-3/4" twist and the muzzle brake has M8x.75mm threading.