Federal American Eagle, Suppressor Ammunition, 22LR, 45 Grain, Copper Plated Lead Round Nose, 50 Round Box AE22SUP1 American Eagle Rimfire Suppressor rounds perform to their ballistic peak in suppressed firearms, thanks to carefully selected propellants, bullet weights and primers. Their sub-sonic loading eliminates the super-sonic crack suppressors can't silence. In addition, special clean-burning powders minimize fouling while reliably functioning in semi-automatic firearms. Suppressor loads are priced for volume shooting.