BCM® Standard 20" Complete Upper Receiver Group w/ KMR-A15 Handguard

MSRP: $962.65
Your Price: $747.35
(You save $215.30 )
(45 reviews)
SKU:
BCM-URG-Std-20-KMR-A-15
Caliber:
5.56 NATO
Barrel Length:
20in
Barrel Style:
Standard
Handguard:
KMR-A15
BCM® Standard 20" Complete Upper Receiver Group w/ KMR-A15 Handguard
Stock Status:

Out of stock

About the BCM® Standard 20" Complete Upper Receiver w/ KMR-A15 Handguard

All BCM® Upper Receiver Groups with a KMR-A Handguard Include:

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

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 per Mil-Spec. 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.***

45 Reviews

  • 5
    Great upper

    Just got this upper and I cannot be any happier. The build quality is simply amazing and the shipping was quick and easy. I am definitely buying another ar upper from them when I am ready for a new build.

  • 5
    Can't beat it!

    Fantastic upper. I usually build my own, but couldn't pass this one up for the price. Everything is very well machined with no marks or blemishes to be seen. The hand guard is very light and feels secure. This upper is actually lighter than some of my 16" uppers that have much shorter hand guards. It shoots great groups with everything i've ran through it. Shipping was fast. Everything was well packaged and oiled. Included several extras in the box as well.

    While the product is flawless, what I would really like to praise Bravo Company on is for their customer service. This was my first time ordering from Bravo Company, but I've ordered from several of the other "big name" AR companies and I can say Bravo has the best customer service. They went out of their way to fix a screwup that was completely my fault. I believe many other companies would've told me "too bad, so sad" in order to make an extra buck. I will be a returning customer and recommend others to buy as well.

  • 5
    BCM 20in

    I am very please with BCM service. Product shipped very fast. I'll let you know what I think of it once I get it pinned to a lower and take it to the range.

  • 5
    Awesome upper.

    This was the upper I used to complete my fixed stock AR-15. This 20" upper with the KMR is lighter than my 14.5 pinned AR-15; that was a surprise. The only thing I wish they included in the box was the accessories that come with a stand alone KMR hand guard. Other than that very small thing, BCM is now my go to AR-15 store.

  • 5
    Perfection

    BCM is easily the best company to buy AR-15 parts from. Im getting less than an inch groups at 100 yards. Not only do they have great products but sent me a free hat with my upper. That right there is them going the extra mile for a customer. Thank you so much for great products!

  • 5
    Complete 556 upper 20”

    Great product at a great price!!! Product was shipped extremely quickly and the little extras in the box made my day! Thank you for the overall great customer serves. You have gained a customer for life. Thank you again!!

  • 5
    A great upper

    I bought this almost on a whim. I was very surprised to find out how light this upper was. My brother's 18" with quad rail weights almost twice as much. I bought this with the intention of shooting 500+ yards so accuracy is top priority. All I had laying around was some cheap back up sights and 55gr ammo. Grouped about 3 inch at 100 yards standing (With $15 sights that had a front post that completely covered the target, so I'm very happy with that). When I get some glass on it and some proper ammo we'll see what it can really do. Oh, and I didn't have a single malfunction. Every round went down range with out a single hiccup. (About 200 rnds)

  • 5
    BCM Standard 20" Upper Receiver Group w/ BCM

    Great experience and products! I'll be back to purchase again!

  • 5
    One happy customer

    I ordered a 20" complete upper with ambidextrous charging handle and BCG, all items arrived quickly and was happy to see all the goodies included in the package from Bravo Company. It was like a Christmas present from my favorite AR parts company. Very happy with my purchase and will be buying more uppers from BCM in the future. Thanks!