How a Walther P99 Pistol Works

Wikipedia: Type Semi-automatic pistol Place of origin Germany Service history In service 1997-present Used by See Users Production history Designer Horst Wesp Designed 1994–1996 Manufacturer Carl Walther GmbH Sportwaffen Produced 1997–2023 Variants P99QPQ, P99 Military, P990 (P99DAO), P99QA, P99QNL, P99AS, P99TA, P99C, P99C AS, P99C QA, P99C DAO, P99 RAD, P99Q and SW99 Specifications Mass 630 g (22 oz) (9×19mm) 655 g (23.1 oz) (.40 S&W) Length 180 mm (7.1 in) (9×19mm) 184 mm (7.2 in) (.40 S&W) Barrel length 102 mm (4.0 in) (9×19mm) 106 mm (4.2 in) (.40 S&W) Width 29 mm (1.1 in) (9×19mm) 32 mm (1.3 in) (.40 S&W) Height 135 mm (5.3 in) Cartridge 9×19mm Parabellum .40 S&W 9×21mm IMI Action Short recoil operated, locked breech Muzzle velocity 408 m/s (1,339 ft/s) (9×19mm) 344 m/s (1,129 ft/s) (.40 S&W) Effective firing range 50 m (55 yd) (9×19mm) Feed system 9×19mm: 10-, 15-, 17- or 20-round detachable box magazine .40 S&W: 10-, 12-, or 14-round box magazine Sights Interchangeable 3-dot notch sight