Just swap this drop in conversion with the bolt carrier group from your 5.56/.223 chambered rifle and you will be ready to shoot .22LR. For best performance use a round style hammer as notched hammers can cause function issues and 36 grain plated nose bullets have proven to be the best choice for function.
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CMMG MK57 AR Conversion Kit 223 Rem/5.56mm to 22 LR, 3 Magazines, 25rd
Original price was: $234.69.$58.67Current price is: $58.67.
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