CMMG Inc Chamber Adapter Assembly 22ARC Mk57 Black

CMMG Inc Chamber Adapter Assembly 22ARC Mk57 Black. These CMMG Conversions easily convert your CMMG Mk57 5.7x28mm upper receiver into a .22LR in a snap with just a drop-in conversion. Simply remove your bolt carrier group from your CMMG Mk57 5.7x28mm upper and drop in the conversion piece. These are designed for use with all CMMG Mk57 5.7x28mm upper receiver groups when paired with an AR-15/Mk4 Lower. However these conversions are not compatible with Mk57 Lower Groups. With incompatible bolt carriers and carrier groups these conversions aren't compatible with any Mk57 Lower Groups. For a reliable and durable conversion depend on the CMMG Mk57 ARC Chamber Adapter Assembly. Specifications for CMMG Inc Chamber Adapter Assembly 22ARC Mk57: Manufacturer: CMMG Color: Black Fabric/Material: Stainless Steel Caliber: .22 Long Rifle Magazine Capacity: 0 Round Magazine Included: No Features of CMMG Inc Chamber Adapter Assembly 22ARC Mk57 Stainless Steel Construction Compatible with all CMMG MK57 Uppers Simple Installation No Tools Required Package Contents: CMMG Inc Chamber Adapter Assembly 22ARC Mk57 CMMG Inc 54BA4DB: Chamber Adapter Assembly 22ARC Mk57 Black