BCM MK2 BFH Carbine Barreled Upper Receiver KMR-A10 – 11.5″


  • 11.5” barrel chambered in 5.56
  • Cold hammer forged MIL-B-11595E barrel steel
  • Manganese Phosphate coated
  • Government profile
  • Chrome lined bore and chamber
  • HPT and MPI
  • 1:7 twist rate with carbine gas system
  • MK2 improved upper receiver
  • Increased rigidity with barrel extension
  • Gas expansion chamber and venting system
  • Shortened forward assist
  • T-marked picatinny rail
  • 10” KMR-A10 KeyMod free float handguard
  • Includes 3” picatinny rail and KeyMod sling mount


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SKUBCM-MK2-URG-11-BFH-KMR-A-10 Category

NOTE: This upper assembly has a barrel less than 16” in length. These uppers are intended for use in AR pistol or legal short-barreled rifle builds. Other configurations may violate Federal law.

Looking for an upper receiver that will give you an edge on the competition? Look no further than the BCM MK2 BFH Carbine Barreled Upper Receiver KMR-A10 – 11.5″. This receiver is packed with patent pending innovative features that are sure to improve your performance. The internal geometry of the receiver has been redesigned to increase rigidity and reduce barrel deflection. This means that your shots will be more accurate and you won’t have to worry about premature wear on your receiver. The gas expansion chamber and dual gas vents work together to redirect excess gas away from your face, keeping you comfortable and focused on the target. Whether you’re a competitive shooter or just looking to upgrade your AR-15, the BCM MK2 BFH Carbine Barreled Upper Receiver KMR-A10 – 11.5″ is the perfect choice for you.


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