This Rock Island Armory TCM is a semi-auto handgun and one of the most versatile 1911s on the market. It was built specifically for the 22 TCM cartridge, but a drop-in barrel easily allows for use with 9mm cartridges as well. Superbly balanced, this pistol offers accuracy and low recoil, while steel construction and a carefully managed hand fitting process ensure continuous performance and longevity.