CMMG .22LR Conversion Bolt Carrier Group
Drop in conversion bolt carrier group for a 5.56 barrel/upper receiver
Compatible with CMMG .22LR Magazines
Swap the BCG and magazine to begin shooting ...
9MM Bolt Carrier Group
Complete, drop-in carrier/bolt assembly is ramped on the bottom to provide clearance for a factory .223/5.56mm hammer in your 9mm conversion. Eliminates the need to install a...