BCM® Standard 11.5" Carbine Upper Receiver Group w/ KMR-A10 Handguard

MSRP: $873.35
Your Price: $675.35
(You save $198.00 )
Maximum Purchase:
10 units
5.56 NATO
Barrel Length:
Barrel Style:
Barrel Profile:
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All BCM® Upper Receiver Groups with a KMR-A Handguard Include:

  • One 3" Picatinny Rail Section
  • One BCM KeyMod 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.
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.***

35 Reviews

  • 5
    Customer review

    Review body is empty

  • 5
    BCM always Delivers

    First, off I bought this upper because I went cheap the first time and had problems so I replaced the upper and bout this. Buy once cry once. The upper performs flawlessly. Lightweight, good looking upper and the quality is top notch. The KMR rail is as good as everyone says it is and is superb. Ate cheap brass and steel all day long. The rail will heat up after 3-4 magazines of rapid-fire, so get the BCM rail guards as well. This is my second BCM upper and I own many of their products. If I had to choose one company to defend my life with it would be BCM.

  • 5

    I have been coming back to BCM because of the excellent products that they sell. Coming from someone who has seen battle and needed the tools. Well BCM brings there A game to the tools. I have built my 16 inch AR and now my 11.5 inch pistol. The quality is amazing and the customer service is great as well. I would recommend them every time so if your looking, don’t second question it and pull the trigger. My 11.5 built is completed and looks great. Works even better, check out insta @summit435 for pics.

  • 5
    Customer review

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  • 5
    Customer review

    Great service and high quality .

  • 5
    11.5in upper with kmr alpha

    My upper came in very quick and the quality was top notch you have a customer for life. I've ordered 2 more times since my upper and it's always on time and everything from springs to keymod accessories is quality stuff.

    Thanks Again,
    Maxwell Fell

  • 5
    Top notch upper

    This is my first sbr upper, second BCM upper. Spent a week deciding between this and the bfh variant. The extra money for the bfh wasn't worth it to me seeing that the standard will last over 30,000 rds. I attached a dead air flash hider and put a h3 buffer in my FN lower. Shot it with and without my Sandman S and it ran 100%! Also I ordered this upper on Monday morning the 13th and it arrived at my house on Wednesday morning the 15th! High quality products and super fast shipping! Can't ask for anything more!

  • 5
    Great barrel length and upper receiver

    I have only had this upper receiver out a few times, but so far so good! Put together very well and very lightweight. Not much to say except if you are looking for an upper with the 11.5" barrel length, which I recommend, BCM would be my first stop. I know from now on, BCM will be my first stop for any parts.

  • 5
    Great quality

    This upper has exceeded my expectations in quality and accuracy.