The TCM Rock Standard MS HC is constructed in 4140 Ordnance steel and refined by our carefully managed hand fitting process. It's built to drive the factory original Rock Island 22 TCM cartridge at over 1850fps and features a 4.25” barrel with penetrating impact and unprecedented light recoil. Add a double stack mag well with 17-round capacity and the TCM MS Rock Standard earns respect for delivering a constant high velocity payload. Includes skeletonized hammer and trigger with adjustable over travel stop and low profile anti-snag front and rear sights. This pistol is fitted with checkered polymer grips and finished with a durable parkerized coating. Complete with a drop-in 9mm accessory barrel, the TCM Rock Standard offers the best in old and new.