CMMG Receiver Extension and Stock Kit A1 Mk3

Combine this kit with your choice of lower parts kit to complete your lower group.

• CMMG A1 Receiver Extension
• .308 Rifle Buffer Assembly
• .308 Rifle Action Spring
• A1 Rifle length Butt stock Assembly

Ships to your address. Free in-store pickup is available at our Round Lake, NY showroom.