The cartridge: Inspired to create more power in a smaller caliber, Armscor President Martin Tuason and master gunsmith Fred Craig developed the .22 TCM (Tuason Craig Magnum). The two took a .223 bullet and shoved it into a 9mm case to make a hot caliber that gives you 2,100 feet per second from a 40-grain bullet from a 1911. Barrel Length : 5 Hand Gun Web Model : Rock Island Armory Caliber : 9mm/.22TCM Capacity : 17 Finish : Parkerized Barrel Length Range : 5"<6" Item Description : API M1911A1 MIC MG 9/22TCM 17 Caliber-Gauge : 9MM LUGER BE FIRST TO REVIEW THIS PR