BCM® Standard 14.5" M4 (SOCOM) Upper Receiver Group

MSRP: $620.40
Your Price: $510.40
(You save $110.00 )
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M4 Feed Ramp Barrel Extension
Barrel Length:
Barrel Style:
Standard (SOCOM)
5.56 NATO
Stock Status:
The SOCOM M4 profile is a mid-weight profile barrel for the M4A1 Carbine. The flats milled under the handguards are for mounting of the M203. SOCOM requested the mid profile to better handle the volume of fire from their shooters. This profile is being adopted as a new standard for the M4A1 Carbine.

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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.
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 - 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.***

86 Reviews

  • 5
    Superb quality

    Posted by B. Dale on Oct 5th 2020

    Buy a BCM and live happily ever after.

  • 5
    14.5 socom

    Posted by William on Aug 6th 2020

    Great product! Exactly what I’ve been wanting to complete a lower I have. With the quality of there products and reputation they have rightfully earned if you need components and products you can rely on this is the place!!!

  • 5
    Bcm socom upper reciever

    Posted by Billy on Jul 26th 2020

    After I received it I removed the front sight and delta ring. The front sight is a B$&@“ to get off. First taper pin was anyways the second towards reciever came out easy. the mil in the barrel was a little small And so the taper pin was in there pretty tight. I need a small heavy hammer but no no worries. Everything else is great. The finish is a little more basic than high priced rifles but everything is a nice tight fit and functions well.

  • 5
    Very satisfied

    Posted by Robert on Jul 7th 2020

    I have nothing to complain about. Feels very solid, well fitted, and just all around great. Has been a great shooter with excellent reliability .

  • 5
    14.5 Socom Upper

    Posted by Jeff J on Mar 26th 2020

    Extremely happy with the quality and support from BCM. This is my second Socom 14.5 upper I bought and the quality has been great. Just wish I could get this build to the range to enjoy it which has been kinda hard because of the pandemic. With my OCD I can see the pinned and welded A2X flash hider is slightly over clocked and a degree or two off center. Something I can live because I don't see it having any affect on function. BCM has treated me great and their products have been overall really good.

  • 5
    BCM M4 14.5 in. SOCOM Upper w/MOD 1 Comp

    Posted by Sean OBrien on Mar 9th 2020

    I got a chance to get this upper out to the range this past Friday. In typical BCM fashion, this 14.5 in. SOCOM Upper did not disappoint. This latest one is my second one with the MOD 1 Compensator, and I think it is my favorite rifle configuration. The Comp combined with the little extra weight to the barrel make the recoil a little smoother. If you want a 14.5 in. M4 upper, take a look at this set up. You will not be disappointed.

  • 5
    Top notch quality from an equally top notch company.

    Posted by Dakota R on Mar 8th 2020

    You may be sitting there, right now, reading reviews on multiple uppers from a multitude of different manufacturers, weighing the pros and cons of each, just like I was before I ended up pulling the figurative trigger on this one. I have built my fair share of ARs, from budget to Gucci guns, and I have never found the same levels of quality or service from anywhere else. So, if you're on the fence, trust me, go with these guys and gals, their products are worth every penny.

  • 5
    M4 socom 14.5

    Posted by Adam on Feb 27th 2020

    1st time oredering from BCM, with high expectations and they definitely exceeded my expectations.. The upper was packaged nicely and the quality was flawless, was also very impressed with all the extras that came along with the upper. Will definitely be placing more orders in the future.

  • 5
    14.5 SOCOM

    Posted by Julius Eagon on Feb 14th 2020

    Got it in 48 hours almost exactly

    Great company