CMMG Mk4 K 5.56mm Upper Group BLACK

NOTE: These do not come with a flash hidder but a SV Brake.

The Mk4 K Upper Group 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 Upper Group is covered by CMMG’s lifetime quality guarantee.

Caliber: 5.56mm
Barrel: 12.5” medium weight multi-role profile
Muzzle: SV Brake, threaded 1/2-28
Hand Guard: CMMG RKM11 KeyMod hand guard
Receiver: Forged 7075-T6 AL M4 type upper
Gas Port Location: Carbine

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

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CMMG Mk4 K 5.56mm Upper Group 12.5"

  • Brand: CMMG
  • Product Code: CMMG Mk4 K 5.56mm Upper Group 12.5"
  • Availability:
    1
  • $1,499.00
  • $1,348.95
  • Ex Tax: $1,173.00

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Tags: CMMG Mk4 K 5.56mm Upper Group