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NEW IN BOX, CMMG Mk9 9mm Complete Lower Receiver. Forged 7075 T6 Aluminum and includes a Standard A2 Pistol Grip , 6 position M4 CAR stock, and CMMG Ambi Safety Selector. Designed to accept standard Colt pattern magazines.
Combine it with your favorite 9mm upper receiver group to build your ideal rifle.