CMMG Mk4 LEM 5.56mm Upper Receiver (CMMG-55BC7D3)

CMMG Mk4 LEM 5.56mm Upper Receiver (CMMG-55BC7D3)


CMMG-55BC7D3

We will price match any currently priced, in stock item. In some rare instances we may not be able to match a price but will do all that we can to give you the best deal possible. (We cannot match the price if it is under our cost) Please call store at 1.800.486.7497 to check availability for immediate pickup. Please review the Terms and Conditions HERE.

Type: AR Uppers


  • Nitrided 16" 4140 CrMo steel barrel
  • Mid-length medium taper barrel profile
  • Forged 7075-T6 receiver
  • Black Finish
Caliber 5.56mm
Barrel 16"” medium weight taper profile
Muzzle A2 comp., threaded 1/2-28
Hand Guard M4 type 2 piece hand guards
Receiver Forged 7075-T6 AL M4 type


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