The .22 TCM is a funky cartridge. It’s designed from a necked down piece of 9mm Parabellum brass to take a .223 caliber bullet (the same bullet used in 5.56x45mm NATO rifles) and fire from a handgun. We first saw this caliber at SHOT, but now it seems that Rock Island Armory (who I seem to recall are owned by Armscor, developer of the .22 TCM round) is making a 1911 that fires this oddball cartridge. American Rifleman had the scoop, and claims the gun will be available with a 9mm conversion barrel. Make the jump for a video from GunsForSale.com about the cartridge…
[h/t American Rifleman]