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  BCM Standard 20" Rifle Length Barrel, Stripped

BCM 20" Rifle Length Barrel, Stripped
BCM 20" Rifle Length Barrels, Stripped.

List Price: $310.00
Our Price: $239.00

Stock Status:In Stock
Product Code: BCM-BRL-S-20 STD

(.750) at Gas Block location
Approximate Weight: 2lbs 1oz.
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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.
These are stripped 20" Rifle Length Standard 11595E barrels with gas ports installed and dimpled for a strong gas block installation.
M4 Feed Ramp Barrel Extension
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 barrels.
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 Barrel Steel (Mil-B-11595E)
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 © 2009 Bravo Company MFG, Inc.
  • M4 Feed Ramp Barrel Extension (USGI)
  • USGI 1/7 Twist Rates
  • USGI 5.56 NATO Chambers
  • Mil-Spec 11595E - Barrel Steel (CMV)
  • Chrome Lined Bore and Chamber
  • Manganese Phosphate Barrel Finish
  • USGI Government Profile Barrels
  • HPT (High Pressure Test) Barrels
  • MPI (Magnetic Particle Inspected) Barrels
Average Customer Review: 5 of 5 Total Reviews: 20 Write a review.

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  0 of 0 people found the following review helpful:
Barrel 20" October 14, 2016
Reviewer: Eric Buckner from United States  
Looked at a lot of places before I decided to get the bcm barrel. It has not let me down yet.  Also the shipping was pretty fast if that's something you care about.

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  0 of 0 people found the following review helpful:
Flawless September 22, 2016
Reviewer: Troy von blankenburg from Orlando, FL United States  
Every piece was aligned and machined perfectly. 256 rds, perfect accuracy, barely had to adjust a brand new scope to sight in, not one cycling malf or weird catch or reason to use forward assist.

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  0 of 0 people found the following review helpful:
20 inch barrel assembly September 22, 2016
Reviewer: shawn  
Top quality barrel I'd  trust my life on. No reason to cut corners. Fit and finish look great. Plan on free floating this barrel.  Im confident it will exceed my expectations.

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  0 of 0 people found the following review helpful:
Awesome Barrel September 22, 2016
Reviewer: Ric B from Trenton, NJ United States  
Everything from BCM is top notch as usual and finding a quality 20inch barrel is a tough proposition. Everything assembeld to it like a dream and will expect great accuracy from this barrel as well.

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  0 of 0 people found the following review helpful:
Excellent for my build September 22, 2016
Reviewer: Kyle Maryeski from North Kingstown, RI United States  
I now have a sexy BCM A4.  All I've had time to do is zero with the carrying handle rear sight.  It took all of nine rounds with a milspec zero target.  I own plenty of BCM rifles so I expect great combat accuracy.  I'd take any of my BCM's back to Iraq or Adghanistan and trust my life those of my buddies on it.

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AR-15 Barrel Assemblies > 20" Rifle Barrels