22 APG, .22 Carbine, .22 Gustafson SCHV, .22 PMJ, .22 Spitfire, .22/.30 Spitfire, 22-30 Carbine, 5,56 x 33 Spitfire, 5,6 x 33 Experimental, 5,7 mm Johnson "Spitfire", 5,7 mm MMJ