BCM® Standard 16" Mid Length Upper Receiver Group

MSRP: $620.40
Your Price: $510.40
(You save $110.00 )
M4 Feed Ramp Barrel Extension
5.56 NATO
Barrel Length:
Barrel Style:
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Professional Grade Weaponry, by BCM®™
Made by Bravo Company MFG, Inc. (BCM®™) These Barreled Upper Receiver Groups are designed for shooting professionals 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 (USGI)
M4 Feed Ramp Flat Top 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® uppers 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 and private security personal for its superior ballistics.
Mil-Spec 11595E - Barrel Steel
BCM® barrel steel is Mil-Spec per MIL-B-11595E. 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. The 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 on the USGI M16/M4 rifles 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 ammo.
Mil-Spec F-Marked Forged Front Sight Bases
Mil-Spec for rifles issued to the troops require taller front sight bases on all flat top AR rifles. Many commercial offerings use M16A2 height front sight bases on all of their barrels regardless of what type of upper it is installed on. As a result, owners of rifles and carbines with the flat top receiver configuration can have problems getting a proper 'zero' for elevation with Mil-Spec back up iron sights. As all of the BCM® uppers are built for flat top uppers, all have the proper Mil-Spec F marked front sight base to insure the correct height for iron sight zeroing when using military iron sights. Mil-Spec taper pins secure the forged front sight base with the sling swivel secured by tubular rivets.
Government Barrel Profiles
Duty rifles are built to be carried - day in and day out. The USGI barrel profiles (often referred to as the Government Profile) enable the operator to carry their weapon for longer periods of time and deploy them faster than the heavier commercial H-Barrel counterparts. The government profile barrel is also compatible with the current M203 mounting systems.
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 2005 - 2012 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.***

139 Reviews

  • 5
    BCM Standard 16" Mid Length Upper Receiver Group

    This is my 3rd BCM upper. As usual quality is excellent. BCM customer service is outstanding.

  • 5
    Awesome Classic Upper

    This upper is part of an high-quality all-BCM build that I am transitioning to after my starter rifle, the Springfield Saint. It has all of the same furniture, optics, and and external specs of the Springfield Saint, but it definitely performs better. It feels like the Saint when I pick it up, but it feels like a BCM when I shoot it! It has a very smooth action, it was very easy to zero, and I consistently get tighter groups than I do with my Saint. For the many people that bought a Saint as their first AR-15, I highly recommend transitioning to a system with this upper using the same BCM handguard the Saint uses along with a BCM lower with the same BCM stock and pistol grip the Saint features.

  • 5
    High quality upper assembly

    Took it to the range a few days after building and worked flawlessly. The whole rifle is built with BCM parts on an Anderson stripped lower. 400 through it in the first range trip. No hiccups as has come to be expected. Definitely my go-to company. Priced right for what you get. Not my first, or last from BCM.

  • 5
    BCM 16" upper receiver.

    Received my upper mid length 16" receiver and was totally satisfied with the time of delivery and the quality of this product! Definitely going to order from Bravo Coming again!

  • 5
    Great upper!

    Well built, reliable, and accurate! Fast shipping. I'm very happy with this purchase as well as my other purchases from BCM

  • 5
    High quality product, excellent service

    The upper arrived much quicker than anticipated. It was packed very nicely with a lot of extra "swag"

    Have only put ~200 rounds through it so far but it seems to be a very high quality upper. it didn't take long to sight in at 25 and then 100 yds. Would highly recommend to anyone wanting a basic, lightweight, reliable upper. Thank you BCM!

  • 5
    My best and favorite BUILD (assembly)

    This will be my 4th AR15 Build (assembly). I went with BCM as I always have had a great experience with them. I priced out indiviula parts from BCM or their assembled upper and it was actually less to get it that way. I took it out to the range and all I can say is WOW!! Not to put any of my other builds down, the BCM just "feels" better and the quality is superior. I can't explain it but when I have the other rifles side by side I always pick the BCM. I ended up buying the BCM BCG as well as their charger. People, BCM knows what they are doing and their quality is excellent. My next build will be another BCM product! Thank you BCM!

  • 5
    BCM equipment

    Everything I received was high quality and ready to run. Very little fine tuning was needed. It is for this exact reason that I went with BCM. Value and quality are not easy things to come by these days! Great job!

  • 5
    you get what you pay for

    Consistent, quality product. Will be a return customer