The Steyr M357-A1 is the .357 SIG chambering of the M-series, offered to law enforcement agencies that adopted the .357 SIG cartridge as a higher-velocity 9mm alternative. Mechanically identical to the M9-A1 and M40-A1 with caliber-appropriate barrel and magazine. Type: Pistol Action: Semi-Automatic Caliber: .357 SIG Capacity: 12 Year introduced: 2004, Austria Weight: 27.9 oz Overall length: 7.28" Status: Discontinued Intended use: Law Enforcement