Compensated G31 in .357 SIG with ported barrel and slide. Adds compensation to the already-flat-shooting .357 SIG cartridge. A rare variant serving a niche within a niche — .357 SIG users who also wanted factory compensation. Type: Pistol Action: Semi-Automatic Caliber: .357 SIG Capacity: 15 Year introduced: 1999, Austria Weight: 23.28 oz Overall length: 7.32" Status: Discontinued Intended use: Law Enforcement, Service