Go from .223 / 5.56mm to .22LR in 30 seconds with this new CMMG drop in .22 conversion kit with CMMG full body magazine! The CMMG AR Conversion (ARC) .22 LR caliber conversion is a .22LR caliber rim-fire device which replaces the standard bolt/bolt carrier assembly in the AR15 family of firearms. It allows the use of inexpensive .22LR ammunition in place of 5.56 (.223 Rem).
