The CMMG Bravo 22 LR Conversion Kit converts a 5.56/.223 AR rifle to shoot .22 LR, providing a cost-effective option for training and range use. Construction is stainless steel for durability and reliability. This kit includes a conversion bolt carrier group and a 25-round magazine, and is designed to work in most 5.56/.223 chambered rifles. For best performance, use a round-style hammer (not notched) and 36-grain plated nose bullets.