CMMG Mk4 T SBN 5.56mm Semi-Automatic Rifle (55AC72C)

CMMG Mk4 T SBN 5.56mm Semi-Automatic Rifle (55AC72C)


CMMG-55AC72C

How To Buy A Firearm

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: Rifles


  • CMMG's RKM series of KeyMod free float hand guard
  • Nitrided 4140 CrMo steel barrel in a medium taper profile
  Caliber     5.56mm  
  Barrel     16.1", 1:7 twist, medium taper, 4140CM, SBN  
  Muzzle     A2 comp., threaded 1/2-28  
  Hand Guard     CMMG RKM11 KeyMod hand guard  
  Furniture     A2 pistol grip, M4 butt stock with 6-pos mil-spec receiver extension  
  Receivers     Forged 7075-T6 AL M4 type upper, AR15 type lower  
  Trigger     Single stage mil-spec style trigger  
  Gas Port Location     Mid-length  
  Length, in     32" (stock collapsed)  
  Weight, lbs     6.3 (unloaded)