The TCM Rock Standard MS HC is constructed in 2140 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 pentrating 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 trigger with adjustable over travel stop and low profile anti-snag front and rear sights. This pistol is fitten with checkered polymer grips and finished with a durable parkerized coating. - Caliber: 22TCM - Front Sight: Fixed Dovetail Fiber Optic - Rear Sight: TRT1 Adjustable type - Overall Length: 8 - Overall Width: 1.41 - Overall Height: 5.5 - Grip: Polymer - Finish: Parkerized - Barrel Length: 4.25 - Action: Semi-Auto Recoil Operated