Please Note: 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.The CMMG 22LR AR Conversion Kit Bravo allows you to quickly convert your AR from 5.56/.223 to 22LR. Simply swap this AR 22 conversion kit with your rifle's bolt carrier group, and it will be able to shoot 22LR rounds. Plus, the CMMG 22LR AR Conversion Kit Bravo includes three 25-round magazines. Compatible with most ARs chambered for 5.56 NATO/.223 Remington.Features: