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 CMMG 30B8A67 Upper Group, Mk4 K, 300 BLK
CMMG Inc logo
CMMG 30B8A67 Upper Group, Mk4 K, 300 BLK
UPC: 815835016016

List Price: $824.95
Our Price: $774.95
      You Save: $50.00

The CMMG 30B8A67 Upper Group, Mk4 K, 300 BLK includes the RKM11 KeyMod free floating hand guard. The barrel is a nitrided 4140 CrMo steel 12.5″ barrel available in both 5.56x45mm and 300 AAC Blackout. Each CMMG 30B8A67 Upper Group, Mk4 K, 300 BLK is covered by CMMG’s lifetime quality guarantee.
Caliber: 300 Blackout
Barrel: 12.5″, 1:7 twist, Multi-role profile, 4140CM, SBN
Muzzle: A2 comp., threaded 5/8-24
Hand Guard: CMMG RKM11 KeyMod hand guard
Receiver: Forged 7075-T6 AL M4 type upper
Gas Port Location: Pistol
Upper Group consists of:
Upper Receiver Assembly (Upper Receiver, Ejection Port Cover, Forward Assist)
Barrel Sub-Assembly
Hand Guard and Barrel Nut
Charging Handle
Bolt Carrier Group