BCM® MK2 Standard 14.5" Mid Length Upper Receiver Group w/ MCMR-13 Handguard

MSRP: $909.39
Your Price: $711.39
(You save $198.00 )
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5 units
5.56 NATO
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About the BCM® MK2 Standard 14.5" Mid Length Complete Upper Receiver w/ MCMR-13 Handguard

All BCM® Upper Receiver Groups with a MCMR Handguard Include:

  • One 3" Picatinny Rail Section 
  • One BCM MCMR Sling Mount

Manufactured by Bravo Company MFG, Inc. (BCM)

These Barreled Upper Receiver Groups are designed for shooting professionals and responsible civilians with the Mil-Spec features for the demands of their duty. They are fully assembled, headspaced, and test fired.

As a note: BCM barrel components are parkerized separately before assembly. Prior to shipping, all BCM upper receiver groups are test fired for function, laser bore sighted with a Milspec carry handle for sight alignment within Mil-Specs, and then batch samples are test fired for accuracy. As such, the upper receiver group will show handling marks consistent with these quality control procedures.

Featuring BCM’s Patent Pending MK2 Upper Receiver

This proprietary design offers enhanced rigidity over the USGI product. The increased rigidity limits barrel deflection which aids in consistency/accuracy. Less flex also reduces premature damage, wear, and failure of bolt lugs from misalignment. A gas expansion chamber is machined above the charging handle track, combined with dual vents machined at the rear (each side, above the charging handle latch) to help to redirect and vent gas away from the shooter's face. 

M4 Feed Ramp Barrel Extension and Upper Receiver

In developing the USGI M4 carbine as one of the primary weapons for today's infantry, some modifications were performed to the original M16 platform to enhance the reliability of the shorter barreled carbines. With the shorter carbine gas system and the increased gas port pressure, the carbine cycled faster, and at times the cycle rate could be faster than the magazine would feed ammunition.


One of the modifications done to increase reliable feeding included enhancing the angle and the length of the feed ramps. This USGI modification was done to both the barrel extension and the upper receiver, creating a longer and steeper feed ramp. These Mil-Spec M4 feed ramps are part of the original CNC manufacturing process. As a result, the factory-machined M4 feed ramps on the receiver are hard coat anodized which adds significant strength to the aluminum. This feature is offered on all BCM upper receivers and all BCM barrels.

T-Marked Upper Receiver

The contemporary M16/M4 rifle is built around the concept of modularity. All of the BCM flat top uppers feature a USGI type laser etched T-marks to provide addressing for the remounting of tactical accessories such as optics, laser sights, etc. This enables the weapon platform to be easily configured and then accurately reconfigured for each specific mission.

USGI 1/7 Twist Rate

The USGI 1/7 twist rate of all of the BCM barrels is the preferred twist rate by most professional infantrymen. This twist rate has proven very versatile and can effectively run the new heavier 5.56 ammo that is hugely popular with military, private security personnel, and personal defense for its' superior ballistics.

Mil-Spec Barrel Steel (Certified Mil-B-11595E)

BCM barrel steel is Mil-Spec per MIL-B-11595E, and is independently certified. This grade (CMV) of steel is a Mil-Spec steel used in the USGI M16 family of rifles; it is stronger and will last longer than the typical barrels offered in the commercial market. This Mil-Spec grade steel gets its' additional strength and rigidity from an increase in carbon and/or vanadium in the alloy. This will offer increased barrel life and performance through use in all types of extreme environments and temperatures.

Chrome Bore and Chamber

One of the first modifications that were made to the original M16 in the mid 1960s was the addition of the chrome lined bore and chamber. It is now a worldwide standard in the industry for a battle rifle. The chrome bore and the chamber is harder than the barrel steel and will aid in chambering, extraction, and reliability. It increases velocity and also resists fouling and corrosion from extended use in the field. This gives the end user a longer barrel life with less required time for maintenance and cleaning.

Manganese Phosphate Barrel Finish

Barrels are parkerized with the manganese phosphate finish (Mil-Spec A-A-59267). Military specifications also state that the entire barrel surface is phosphate finished to create a porous surface to absorb oil to resist corrosion from the elements. BCM barrels are phosphated before the installation of front sights. This is a much more extensive assembly operation but insures that the entire barrel is finished and protected . . .even under the front sight base.

5.56 NATO Chambers

The USGI 5.56 NATO chamber is the best choice for effective deployment, reliability, and compatibility, of higher chamber pressures of military or high-quality personal defense ammunition. 

HPT / MP Inspected Barrels

Military specifications require that barrels undergo an HPT (High-Pressure Test) load as a part of quality assurance procedures. Commonly referred to as a proof load, the M197 HPT is rated for 70,000 psi. BCM barrels are proof loaded and then MPI (Magnetic Particle Inspected) is to detect any possible flaws in the barrels' surface. The barrels are MP inspected with both circular and longitudinal magnetic fields per ASTME1444-01 (current Mil-Spec) to assure a high-quality finished product. All BCM barrels are marked HP MP as our proof load marking.



Bravo Company builds: Life Saving Tools™

Copyright 2010-2023 Bravo Company MFG, Inc.

***This product contains chemicals/materials known to the State of California to cause cancer and other reproductive harm. To learn more, visit www.p65warnings.ca.gov.***

22 Reviews

  • 5
    BCM MCMR MK2 14.5

    Purchased the mk2 mcmr 14.5 and im extremely satisfied, unfortunately was not able to get the Enhanced lightweight version do to being out of stock but still my upper is incredibly light weight, haven’t shot it yet do to ammo shortage, will be installing the knox from SOLGW to bring it to 16in , would highly recommend , will be purchasing BCM products in the future

  • 5
    14.5 mk upper

    So far I love this upper. It is a bit heavier than the standard, but it does seem to keep it more on target. I run this with the surefire warcomp. With the minimum recoil the rifle already has, the 50/50 does a good job of minimizing the barrel rise. Im sure a full compensator will be more effective but I am more than happy for my needs.

  • 5

    Most Reliable Rifle in my vault. The Chevy of rifles!

  • 5
    Great Product

    Great product; fit, finish and performance. Highly recommended

  • 5
    BCM 14.5 with MCMR handguard

    The fit and finish of everything is very nice, and I am very pleased with the quality of the entire assembly. BCM seems to have very good QC.

  • 5
    14.5” upper

    BCM continues to make an excellent product at prices that won’t break the bank. Plus they are one of the few manufacturers with products available while there competitors have been out of stock for months. Well done BCM

  • 5
    Bcm upper

    Received my upper quick. Great quality as expected. Very happy with it so far

  • 5
    14.5 MCMR MK2 UPPER Standard

    As usual fit,finish and function on point for anything that involves BCM...

  • 5
    Great product

    I ordered this upper to go with my BCM lower and it performed exactly how I thought/hoped it would. Smooth shooting and perfect size. Shipping was super fast too. Thanks BCM!