CMMG 22D7C6C Barrel and Bolt Carrier Group Kit, 16.1" .22 LR, Black Nitride - 22D7C6C

This CMMG conversion kit includes a 16.1" .22 LR barrel and bolt carrier group designed to convert an existing AR-15/M4 upper receiver to .22 LR. Features black nitride chromoly steel construction with a 1:16" twist rate and threaded muzzle. Simply add a .22 LR magazine to complete the conversion.