Features
- Factory machined M4 feed ramps on the receiver with hard coat anodization adding significant strength to the aluminum
- USGI type laser etched T-marks to provide addressing for the remounting of tactical accessories such as optics, laser sights, etc
- Preferred USGI 1/7 twist rate effectively runs new heavier 5.56 ammo
- BCM barrel steel is Mil-Spec per MIL-B-11595E is stronger and will last longer than typical barrels offered in the commercial market
- Chrome lined bore and chamber is harder than the barrel steel and aids in chambering, extraction and reliability
- Barrrel manganese phosphate finish (Mil-Spec A-A-59267) creates a porous surface to absorb oil as to resist against corrosion from the elements
- Cold hammer forged barrel inceases barrel life and outstanding accuracy
- HPT / MP inspected barrels
About the BCM® BFH 14.5" Mid Length ELW Complete Upper Receiver w/ MCMR-13 HandguardAll BCM® Upper Receiver Groups with a MCMR Handguard Include: One 3" Picatinny Rail Section, One BCM MCMR Sling Mount
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 Mil-spec 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.
Cold Hammer Forged BarrelsThis process of manufacturing barrels has been used for European small arms for generations and it is gaining popularity in the United States because of the increased barrel life and outstanding accuracy of a hammer forged barrel. The BCM BFH series of barrels are made right here in the USA. (Just like all the BCM products.)
M4 Feed Ramp Barrel Extension and Upper ReceiverIn 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 ReceiverThe 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 RateThe USGI 1/7 twist rate of all of the BCM barrels is the preferred twist rate by most professional infantrymen. 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 personnel 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 ChamberOne of the first modifications that were made to the original M16 in the mid 1960s 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 the chamber is harder than the barrel steel and will aid in chambering, extraction and reliability. It increases velocity and also resists fouling and corrosion from extended use in the field. This gives the end user a longer barrel life with less required time for maintenance and cleaning.
Manganese Phosphate Barrel FinishBarrels 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 to resist corrosion from the elements. BCM barrels are phosphated before the 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 ChambersThe 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 BarrelsMilitary 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.
Manufacturer: BCM
Specifications:
Caliber: 5.56 NATO
Barrel Length: 14.5"
Barrel Material: 11595E Spec Steel
Barrel Finish: Manganese Phosphate (Mil-Spec A-A-59267)
Bore & Chamber: Chrome Lined
Weight: 1.28kg / 2.82lbs
Twist Rate: 1:7
Gas System: Mid Length
Compatibility: Most compatible AR15 style lower receivers
NOTE: NFA rules apply