BCM® MK2 Standard 14.5" Mid Length (Enhanced MEDIUM Weight-*FLUTED*) Complete Upper Receiver Group w/ MCMR-13 Handguard

MSRP: $1,017.39
Your Price: $794.39
(You save $223.00 )
5.56 NATO
Barrel Length:
Barrel Style:
Barrel Profile:
Enhanced Medium-Weight *FLUTED*
Upper Receiver:
Stock Status:

Out of stock

About the BCM® MK2 Standard 14.5" Mid Length EMLWF 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 Patented 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 charging handle latch) help to redirect and vent gas away the shooters face. U.S. Patent Numbers: 10670355, 10677549, D888182

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 infantryman. 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 personal, 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 1960's 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 chamber is harder than the barrel steel and will aid in chambering, extraction, and reliability. It increases velocity, and also resist against fouling and corrosion from extended use in the field. This gives the end user a longer barrel life with less required time in 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 as to resist against corrosion from the elements. BCM barrels are phosphated before 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 ammounition. 

HPT / MP Inspected Barrels

Military specifications require that barrels undergo a 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) 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.

Shop Related Products:

Want to see more upper receivers? Click the links below to view more BCM® AR complete uppers!


Bravo Company builds: Life Saving Tools™
Copyright 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.***

12 Reviews

  • 5
    Best upper and BCG

    I already order last 2 upper and this is my no.3 order. All are the best in gun industries.300 blk upper, 5.56 light profile and this one is medium profile. I love all 3.

  • 5
    First Time Customer

    I decided to build me an AR. Why not? There is so much information out there that anything is possible.
    Bought everything I wanted for my lower, built it, done.
    Now to find an upper. Looked months for an upper to match my lower. Local, online, gun show, nope. Nothing in stock, back orders, or already built with parts that are not my top choices.
    Heard alot about BCM on YouTube and in forums. Checked out their website a few times. “In Stock”. Now that’s what you want to see during the pandemic.
    The other companies can keep that back order nonsense. The way Bravo Company is handling their company during these times is why I will be a repeat customer. Keep checking back on their website, they restock often.
    No I didn’t get to build my upper for my first AR. This is a great upper! Would not argue against it ever.
    This is everything that I wanted. Quality parts, built to last, made it home unharmed, and it fit my lower so snug.
    So satisfying to own. I’m taking it with me on my boating trip this weekend.

  • 5
    Lightest upper

    This is honestly the lightest upper receiver I’ve ever handled. The medium weight barrel fluted barrel does feel like nothing is there and manipulating it single handed is just an easy task.

  • 4
    MK2 Standard 14.5" Mid Length (Enhanced MEDIUM Weight-*FLUTED*) Upper Receiver Group w/ MCMR-13 Handguard

    I love the balance, it's an amazing barrel, my one and only complaint is that I wish BCM would off an option to have the gas block pinned. I know that the way it comes it tough as nails and won't budge, but having it pinned is my personal preference.

  • 5
    14.5” Upper Reciever

    The quality of this upper is top notch. So far I absolutely zero complaints. I think we all can agree that the products at BCM are wonderful but I had concerns with the shipping.

    It was received via direct mail with NO problems. Package came earlier than expected & I was able to track the package the whole way. 10/10 would do again.

  • 5
    Cant really ask for much more

    Great upper. Fit and finish was spot on as always. But here's what really matters. This thing zeroed with one click right from mechanical zero and was making clover leaves at 50 yards. I only have about 150 rounds through it (you know 2020) but I am confident as time goes on this thing will just keep ticking. I did have a question and reached out to CS who was extremely responsive!

  • 5
    Great quality

    I am so grateful I went with a BCM, the quality is unmatched. Great ergonomics, lightweight, and it looks great. If you are on the fence about spending money on one of these, just keep saving like I did, you will not regret it. The pin and welding job they did is also phenomenal. Great product, 10/10

  • 5
    BCM Mk2 Upper

    BCM is the best there is!!!

  • 5
    Fantastic Upper

    This upper was for my first AR-15 build ever and I have to say I’m impressed. Absolutely no flaws whatsoever with it and it shoots amazing! No jamming or issues at all with the first 300 rounds through it. Highly recommend!