Threaded barrel variant of the Five-seveN optimized for suppressor use. Includes an adjustable rear sight and extended barrel. Type: Pistol Action: Semi-Automatic Caliber: 5.7x28mm Capacity: 20 Year introduced: 2013, Belgium Weight: 27.2 oz Overall length: 8.2" Status: Active Intended use: Service, Law Enforcement, Suppressor Host