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. Ships with a 25rd 22LR magazine. Compatible with left-handed 5.56mm/.223 chambered upper receiver groups. 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.
Please Note: Since .223 WYLDE is NOT a mil-spec chamber, CMMG cannot guarantee fit or function with their 22LR conversion kits
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