The TCM 22 is chambered in Rock Island's proprietary .22 TCM cartridge, a bottlenecked round derived from the .223 Remington case that achieves over 2000 fps from a pistol barrel. Ships with both a .22 TCM barrel and a 9mm conversion barrel and recoil spring. Type: Pistol Action: Semi-Automatic Caliber: .22 TCM Capacity: 17 Year introduced: 2013, Philippines Weight: 36 oz Overall length: 8.5" Status: Active Intended use: Range, Competition