Walther P99 AS in 40 S&W. The AS-trigger P99 in 40 S&W for law enforcement agencies that standardized on the 40 S&W cartridge. The 40 S&W P99 AS uses a heavier recoil spring and modified slide to handle the higher bolt thrust of the 40 cartridge while retaining the AS trigger system. Type: Pistol Action: Semi-Automatic Caliber: 40 S&W Capacity: 12 Year introduced: 1999, Germany Weight: 25.5 oz Overall length: 7.1" Status: Discontinued Intended use: Service, Law Enforcement