BCM MK2 Carbine Barreled Upper KMR-A10 – 12.5″


  • 12.5” barrel chambered in 5.56
  • Government barrel profile
  • Machined MIL-B-11595E barrel steel
  • Manganese Phosphate coated
  • 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-12-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.

The BCM MK2 BFH Carbine Barreled Upper Receiver KMR-A10 – 11.5″ is a top-of-the-line product that features a host of innovative, patent-pending features that improve function and performance. The new line of Bravo Company MK2 AR-15 Barreled Upper Receivers come with a ton of quality of life improvements, such as the redesigned internal geometry to increase rigidity with the barrel extension to reduce barrel deflection and increase accuracy. The rigidity also reduces premature wear and ensures bolt lug alignment to prevent damage. A gas expansion chamber is machined in above the charging handle track combined with dual gas vents to redirect excess gas away from your face, making this one of the most user-friendly and safe upper receivers on the market today.


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