CMMG Bolt Carrier Group, MkGs, 9mm

Bolt Carrier Group, MkGs, 9mm

Whether you’re building a new Radial Delayed Blowback™ AR or you just like having spare BCGs on hand, the 9mm MkGs bolt carrier group is just the thing.

Compatibility: CMMG Radial Delayed Blowback BCGs are desgined exclusively to operate with CMMG Radial Delayed Blowback barrels and will not operate with traditional AR style barrel extensions.

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