BCM® MK2 Standard 11.5" Carbine Upper Receiver Group w/ MCMR-10 Handguard

MSRP: $890.95
Your Price: $687.39
(You save $203.56 )
(16 reviews) Write a Review
5.56 NATO
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Out of stock

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

  • One 3" Picatinny Rail Section
  • One BCM MCMR Sling Mount
Bravo Company builds:  Life Saving Tools™
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 charging handle latch) help to redirect and vent gas away the shooters 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 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.
Copyright 2019 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.***

16 Reviews

  • 5
    bcm mk 2 11.5 upper

    Posted by Sam Morgan on Oct 23rd 2020

    Couldn't be more pleased. Excellent value, very accurate, and comes up to BCM's goal of excellence. This is my second upper from BCM in just the last few months. Very pleased with my 14.5 enhanced light weight as well. BCM has earned my loyalty. Will be buying from them again.

  • 5
    11.5" Barrel MCMR

    Posted by Matt on May 16th 2020

    As with all BCM products the quality is second to none. The new design of the upper receiver is fantastic. Accuracy is top notch and is perfectly gassed. Not much ammo through it yet but functions perfect and smooth with an easy recoil. Using and H2 buffer as well. Thanks BCM for great products that are affordable!

  • 5
    Complete upper

    Posted by Timothy Pilarczyk on May 16th 2020

    Absolutely the best. Love the quality. Love the feel and so far has performed flawlessly

  • 5
    11.5” upper mk2

    Posted by Aaron Rheins on Apr 30th 2020

    This upper is awesome. The rail is nice and thin, but also strong. It’s much lighter than my 10.5” Aero m-lok upper. Great attention to detail and quality control!

  • 5
    Flawlessly operating upper

    Posted by Jarred R on Apr 29th 2020

    Nothing else to say other than this upper being a workhorse. The Mk2 is nice for lefty shooters since the forward assist is moved up a bit to give the support hand some room to access the charging handle. sub MOA groupings at 100 yards on bags so there are no complaints here!

  • 5
    Super slim

    Posted by Kyle Hamilton on Apr 25th 2020

    M-lok handguard is among the slimmest and lightest out there which is nice so after you add foregrips, lasers, lights, etc the thickness will be more manageable. MK2 uppers are a definite improvement and should be the standard receiver for any AR platform rifle that has the lost rigidity of lopping off the carry handle found common M16s. 11.5" is my preferred SBR length for 5.56 with the increased dwell time over 10.3"/10.5" for your carbine length gas system.

  • 5
    Fantastic product.

    Posted by Isaac on Mar 30th 2020

    Excellent craftsmanship and quality. BCM has an excellent reputation for exceptional products, being new to the AR world I’ve only heard excellent things about BCM, now I have experienced it first hand. Shoots like a dream, well gassed and accurate. I’m extremely happy with my purchase.