Gen4 variant of the full-size .45 ACP G21 with RTF4 grip texture and dual recoil spring assembly for improved felt recoil management. Type: Pistol Action: Semi-Automatic Caliber: .45 ACP Capacity: 13 Year introduced: 2013, Austria Weight: 29.28 oz Overall length: 7.59" Status: Active Intended use: duty, home-defense