CMMG Inc. CMMG MK4 Upper Receiver - 223 Remington/556NATO, Billet 7075-T6 Aluminum, Cerakote Finish, Armor Black MSRP: $139.95 Was: Now: $129.95 Add to Cart
CMMG Inc. CMMG MK4 Upper Receiver - 223 Remington/556NATO, Billet 7075-T6 Aluminum, Cerakote Finish, Armor Black Upper Receiver Assembly, Mk4/AR15, Forward Assist Whether it’s the classic style or forward assist functionality that piques your interest, the Mk4 AR15 upper receiver assembly has been a staple in... MSRP: $139.95 Was: Now: $129.95 Add to Cart
