The P9S was HK's first successful self-loading pistol design, using a roller-delayed blowback action derived from the G3 rifle. The S suffix indicates the addition of a cocking lever that allowed the slide to be retracted for visual chamber inspection without disturbing the mainspring. Adopted by German police and military in the 1970s, the P9S laid the engineering foundation for HK's subsequent locked-breech pistol program. Type: Pistol Action: Semi-Automatic Caliber: 9mm Capacity: 9 Year introduced: 1969, Germany Weight: 31 oz Overall length: 7.64" Status: Discontinued Military use: Yes Intended use: military, law_enforcement, collector