The Walther PP, Polizei Pistole, was the first commercially successful double-action semi-automatic pistol, introducing the DA/SA trigger to a production firearm for police use. Its innovative trigger system that allowed firing double-action on the first shot then single-action subsequently became the template for decades of European service pistol design. Type: Pistol Action: Semi-Automatic Caliber: 7.65mm Browning Capacity: 8 Year introduced: 1929, Germany Weight: 23.1 oz Overall length: 6.82" Status: Active Intended use: Law Enforcement, Military Officers