BCM® Standard 12.5" Carbine Upper Receiver Group w/ MCMR-10 Handguard

MSRP: $873.35
Your Price: $675.35
(You save $198.00 )
(27 reviews) Write a Review
SKU:
BCM-URG-12-MCMR10
Caliber:
5.56 NATO
Barrel Length:
12.5in
Barrel Style:
Standard
Handguard:
MCMR-10
Stock Status:

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.
 
 
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 ammunition. 


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.***

27 Reviews

  • 5
    Fantastic

    Posted by Anthony on Aug 14th 2021

    Everything down to the finish is great

  • 5
    Amazing Upper

    Posted by Blake Cothran on Jul 17th 2021

    A few months back I ordered this upper to try out and with only a few thousand rounds through it due to rising ammo prices, It has held up amazingly well. I'd definitely reccomend this upper to others.

  • 5
    12.5

    Posted by Trey on Mar 4th 2021

    Very good upper. Groupings are great, MCMR is light. Can’t beat them for the money

  • 5
    Great quality!

    Posted by Kyle on Jan 11th 2021

    Really get what you pay for! BCM is the best hands down!

  • 5
    Great

    Posted by Rob on Jan 10th 2021

    Great product fit and finish is great nothing to complain about, shipped out fast too. Thanks

  • 5
    Great product

    Posted by Tim on Jan 10th 2021

    Happy with the quality and function no problems running anything I feed it

  • 5
    12.5 upper

    Posted by Damian Worthington on Dec 27th 2020

    Damn good upper. Light weight and very good rail.
    Would not recommend the ambi charging handle. It’s not very good. The other BCM ambi charging handle is worth it.

  • 5
    Solid upper

    Posted by Mako on Dec 22nd 2020

    For a short barrel upper it has really impressed me with the accuracy. Runs low and high end ammo like a champ

  • 5
    I bought the BCM 12” with the 10” MCMR rail the fit and finish is excellent on this upper and is utral relain ale through 300 rounds so far

    Posted by Corey Phillips on Jan 23rd 2020

    Would recommend to everyone who is building an AR pistol