CMMG MK57 AR Conversion Kit 223 Rem/5.56mm to 22 LR, 3 Magazines, 25rd
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.
Reviews
There are no reviews yet.