BCM 14.5″ 5.56 NATO 1:7 Enhanced Light Weight Barreled Upper – 13″ M-LOK MCMR Rail


  • Cold hammer forged barrel for increase barrel life
  • M4 feed ramp barrel extension for increased reliability
  • M4 feed ramp flat top receiver for increased reliability
  • T-Marked upper receivers for mounting optics consistently
  • USGI 1/7 twist rates stabilizes heavier bullets
  • USGI 5.56 NATO chambers
  • Mil-Spec 11595E – Certified Barrel Steel (CMV)
  • Chrome lined bore and chamber
  • Manganese Phosphate barrel finish
  • HPT (High Pressure Test) barrels
  • MPI (Magnetic Particle Inspected) barrels
  • Weighs just 2lbs 13.4oz as configured


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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 muzzle device on this barreled upper receiver has not been pinned and welded.

The barrel is cold hammer forged out of 11595E steel for increased barrel life and accuracy, and then parkerized in a Manganese Phosphate finish to absorb oil and prevent corrosion. The coating is applied before the front sights to ensure every section of the barrel is protected from the elements. The 5.56 NATO chamber and bore are chrome lined making it harder than steel, which aids in chambering, extraction, and overall reliability and further increasing the life of the barrel.

This barreled upper receiver also comes equipped with a 13″ M-LOK MCMR handguard to provide a secure grip as well as added accessory mounting options.

NOTE: Does not include a bolt carrier group or charging handle.

Upper receiver set features a lightweight barrel profile for increased durability and accuracy, as well as a high-pressure test (HPT) and magnetic particle inspection (MPI) for guaranteed performance. Every upper receiver is fully assembled, headspaced, bore sighted, test fired, and inspected per strict military specifications before leaving the factory. Additionally, the BCM MCMR handguard eliminates external load on the barrel, reducing deflection for even more accuracy. Invest in a quality upper receiver set that will last a lifetime with the BCM 14.5″ 5.56 NATO 1:7 Enhanced Light Weight Barreled Upper.


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