BCM® Standard 16" Mid Length Upper Receiver Group w/ KMR-A13 Handguard

MSRP: $884.35
Your Price: $686.35
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5.56 NATO
Barrel Length:
Barrel Style:
Stock Status:

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.***

52 Reviews

  • 5
    BCM Upper Receiver Group

    My first MSR: I researched for months and went with BCM. Bought the lower at Brownells (because BCM was out of stock) and the upper from BCM. First day at the range, sighting in was quick with a new red dot at 50yds - and this BCM MSR is all ACES. Tight groups and flawless operation. I anticipate a scope at deep range to be the same. Very nice work, BCM!

  • 5
    1st build

    This was my first build of an AR. I solicited a lot of advice from others who had done multiple builds, and to a man they said get the BCM upper. The packaging and shipping were great and fast. The construction and materials used were top notch. I love that the top rail is so long, it provides plenty of space to add on extras. The keymod system is a definite must have allowing you the side or undermount other extras as well. I went with the BCM bolt carrier group and the ambidextrous charging handle. Both of these provide smooth and effective operation. All in all I will buy from BCM again.

  • 5
    Exceded my Expectations

    I am very pleased with the fit and finish of this complete upper. I was able to get a 3x9 on it and put 200 rounds of various ammo down range without a single hiccup. The accuracy was very tight on the 25yrd range, I look forward to pushing this out to 100yds and beyond on my next outing and expect to get 1-2 moa results at 100 with no issues. (The hat included in the box is now on my head daily, nice touch BCM!)

  • 5

    In my experience, BCM is the best elite quality level for the money. If you are hesitating to buy, do it. It is beyond worth the money

  • 5
    Perfect for AR builds!

    Looked at a bunch of different uppers, slapped this one on PSA lower and it works fantastically! Has everything I wanted on my checklist (1:7 twist, KMR rail, mid length). Key mod rail is nice and light without sacrificing solidity. Would buy again!

  • 5
    Extremely Satisfied

    Excellent product. Shot it for the first time today and it was flawless.

  • 5
    BCM KMR 13

    Shipping was quick and reliable. Product is top notch, no complaints at all.

  • 5
    Nice and Accurate

    This thing shoots super accurate, and the fit is nice and snug. Shipping was not too long, about 7 days total from order to arrival. Packaging was awesome, got a whole bunch of swag, decals, hat, magazines posters, key chain etc. The upper was nicely wrapped, had some oil on it. Brought to the range and zero'd it at 50 yards with less than an inch grouping.

  • 5
    Superior quality

    I put his on a BCM lower Mod 0; gave me a superior AR 15 for about $200 more than my MOE Colt LE6920. I plan to buy several more uppers of varying lengths/hand guards and a couple more lowers. BCM cannot be beat for the money and will be the majority of my collection.