The Walther PP (Polizeipistole) was the world's first commercially successful double-action semi-automatic pistol, adopted by German police in 1929. Chambered in .32 ACP, it was standard issue for German law enforcement through WWII and beyond. Type: Semi-Auto Pistol Action: Double/Single-Action Caliber: 32 ACP Capacity: 8 Year introduced: 1929, Germany Weight: 23.1 oz Overall length: 6.7" Status: Active Intended use: Law Enforcement, Collector, Historical