Compensated .45 ACP G21 with ported barrel and slide in Gen3 configuration. The .45 ACP C-series benefits more from compensation than the 9mm variants due to the larger cartridge's greater muzzle flip. A limited-production variant primarily sold in the civilian competition market. Type: Pistol Action: Semi-Automatic Caliber: .45 ACP Capacity: 13 Year introduced: 1998, Austria Weight: 29.28 oz Overall length: 7.59" Status: Discontinued Intended use: Competition, Service