BCM® Standard 16" Mid Length (LIGHT WEIGHT) Upper Receiver Group (.625FSB)

MSRP: $620.40
Your Price: $510.40
(You save $110.00 )
(41 reviews) Write a Review
M4 Feed Ramp Barrel Extension
5.56 NATO
Barrel Length:
Barrel Style:
Barrel Profile:
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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
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.
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 - 2010 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.***

41 Reviews

  • 4
    Great upper, but home smiths beware

    This is probably the best upper you can buy, so long as you never intend to work on it. If you like to do your own ARs, look elsewhere. I just had the pleasure of removing the FSB and flash hider to change the endcap from triangle to round, not something to mess with at home. Put the pins in the wrong holes as well, so now I get to knock them back out and re-do it. Other than that, very nicely assembled, looks great.

  • 5
    Another awesome experience.

    Great quality upper shipped lighting fast. The extra swag seems to keep growing each upper I buy too. This is the fifth upper I've purchased from BCM and there are numerous reasons why.

  • 5
    Fast Shipping, Shoots Great!

    I put this upper together with a complete lower I bought somewhere else to complete my first AR ever. I placed my order with BCM the Sunday before Labor Day, so Monday was a holiday. I got a shipping confirmation Tuesday morning before 9:00am and the upper was at my door step on Wednesday afternoon. I took it to the range over the weekend... never having shot ANY AR in my life. I zeroed it at 50 yard with about 12 rounds w/ iron sights. Ordering was easy and straight forward, everything arrived perfectly... even a BCM hat. A fabulous machine that I hope to have for many years to come, thanks BCM.

  • 5
    Best Upper so far

    Had been planning on buying a BCM for awhile, glad I did. When I received the upper it was greased and lubed from the factory. If you have seen BCM unboxing videos, you know what I mean. Stickers and a hat are always a plus. Upper worked flawlessly, feed it steel as well. Was wondering about the lightweight profile, and heating up but after firing it I think I'll be fine. Over all my favorite upper I own out of my 3 Ar platforms I own. Bcm has won me over and is my number one recommendation to people.

  • 5
    Initial Impression

    Received my BCM 16" LWT upper (standard) several days ago. What can I say? The upper is typical BCM quality and I'm looking forward to completing this build. I can already tell it's going to be a very light and handy carbine..

  • 5
    Well built upper

    The upper is well designed. Product is exactly as described.

  • 5
    BCM Standard 16" Mid Length Upper Reciever Group.

    This is my 2nd BCM upper. Previously I've owned Bushmaster and another off brand. BCM is by far a superior product. The fit, finish, and quality are top notch. I have recommended BCM to there's and they have not been disappointed.

  • 5
    Good stuff

    Very high quality. Fast shipping. Awsome

  • 5

    High Quality, Amazing craftsmanship. Couldn't be happier to complete my first AR build with Bravo company. I will keep shopping for parts with you guys, you've got yourselves a loyal customer.