The Rock Island Armory TCM Series of pistols is engineered to deliver exceptional performance with the innovative .22 TCM cartridge, known for its high velocity and light recoil. Some TCM models come with convertible slides that allow for quick caliber conversion, enabling shooters to switch between .22 TCM and 9mm. Constructed from durable 4140 Ordnance steel and meticulously hand-fitted, these pistols are built for reliability and precision. The TCM series includes models like the TCM Standard MS and TCM Standard FS, both of which are designed to drive the .22 TCM cartridge to impressive speeds—over 1850 fps for the MS with its 4.25" barrel and over 2000 fps for the FS with a 5" barrel. These models are equipped with skeletonized hammers and triggers, adjustable over-travel stops, and low-profile anti-snag sights. The checkered polymer grips and parkerized finish provide durability and a secure hold. The TCM TAC Ultra FS HC is a standout in the series, offering additional tactical features. It includes a full-length under-picatinny rail for mounting accessories, front and rear CNC angle grooves for enhanced grip, and upgraded sights with a high-visibility fiber optic front and adjustable 2-dot LPA rear sight. This model also features G10 tactical grips, further enhancing control and comfort. With a double stack mag well and 17-round capacity, all TCM series pistols provide a substantial payload, delivering consistent high-velocity performance.