BCM® Standard 16" Mid Length Upper Receiver Group w/ Centurion Arms C4 12" Handguard

MSRP: $903.00
Was: $903.00
Your Price: $753.00
(You save $150.00 )
(6 reviews) Write a Review
SKU:
BCM-URG-MID-16-C4-12
Features:
M4 Feed Ramp Barrel Extension

Out of stock


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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.
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.

6 Reviews

  • 5
    Great Upper

    Posted by Mike W on Dec 28th 2016

    Fit and finish are top notch, cycles flawlessly, accurate, what more could you ask for?

  • 5
    FANTASTIC

    Posted by Adam on Oct 4th 2016

    Great product, looks good shoots good. Gave me a bunch of free stuff which you cant beat. Thank you very much BCM I am a happy customer forsure! A++++

  • 5
    Excellent

    Posted by RC on May 21st 2013

    I received my upper assembly today and I am very impressed. The fit and finish of everything is top notch. The C4 rail is very light and looks great. I haven't gotten a chance to try it out yet, but it fits well with my lower.

  • 5
    Lucky FInd

    Posted by Chad Beamesderfer on Mar 29th 2013

    I was one of the lucky ones that logged on and it was in stock. Well made, strong and beautiful. Cant go wrong. Fits great with my billet lower. First build couldn't be happier.

  • 5
    Great Upper!

    Posted by Thomas Douglas on Feb 10th 2013

    This was used in my first ever build and let me say i hit the jackpot on this one! Everything about this complete upper is perfect! Like the guy above me said, just buy it already!

  • 5
    Great upper

    Posted by anonymous on Apr 8th 2012

    I bought this upper to complete the build I was working on. Fit and finish is great and it works perfect!! Do think about it buy it!