The Armscor 22TCM9R round matches the length of a 9mm cartridge, allowing it to feed and function properly in supported 9mm firearms. This cartridge gives you the ability to fire .22 caliber bullets at speeds of over 1,800 fps, increasing accuracy and ballistic performance in flight. In addition, the increased speed produces approximately 312 ft/lbs of energy, nearly double the impact energy of most .22LR bullets.