Patented 7.62x39 Enhanced Bolt Carrier Group Buffer with Buffer Technology

Description
Product Features
Customer Reviews
Questions and Answers
Disclaimers
Warranty

Black Rifle Arms^® M16/AR15 Enhanced 7.62x39 Bolt Carrier Group Patented Buffer Technology

We Set Out To Improve Upon Existing Bolt Carriers

TO LEARN MORE ABOUT THE FOLDING STOCK ADAPTORS FOR LAW TACTICAL & SYLVAN ARMS FOLDING STOCKS PLEASE CLICK HERE

The enhanced carrier's integrated buffer helps not only to eliminate metal on metal contact during the transition from upper to lower receivers, but it also buffers the impact between carrier and buffer. Comes with standard bolt carrier polymer buffer.

BOLT CARRIER:

BCG Weight: 10.76 oz.
Bolt Carrier Material, 8620
Key Material, 4130
OCKS Screws (Optimized Carrier Key Screws)
Bolt Carrier EXO Nickel Boron Coating by UTC Coatings
Enhanced Firing Pin
Bolt body produced from AISI 9310 VAR (Vacuum Arc Remelt), the highest standard bolt material made

Machined completely in one operation; this eliminates tolerance and repeatability issues that arise from the multiple fixturing processes used by other manufacturers
Enhanced Design for utmost reliability
Tightly controlled proprietary heat treat process to accurately control cast depth and core hardness

Extractor produced from MIL-S-5000 steel and vacuum hardened
NSCW Crane Division extractor upgraded with Viton® o-ring, 5 coil spring, and plunger
Cam Pin, Melonite QPQ
Firing Pin Retaining Pin
Standard Size Integrated Polymer Buffer:

Eliminates metal on metal contact
Eliminates contact between the hardened steel carrier, aluminum receiver extension and buffer
Eliminates hardened steel carrier as it transitions between upper and lower receivers
Self-lubricating, shock-absorbing and has seven times the abrasion resistance of carbon steel
Reduction in felt recoil and vibration

Quality, quality, quality.

When you hold this bolt carrier group in your hand, you know you are holding a quality product. I compared this BCG with one from Fail Zero and the FZ cannot hold a candle to the fit and finish of the BRA BCG. The finish, compared to the FZ, has a glass like smoothness with a mirror finish akin to chrome plating on high end wheels whereas the FZ looks blotchy and is not as smooth. The gas staking on this BCG is also very well done compared to the FZ. The only thing keeping me from giving this a full 5 star review is that I wish the cam pin, bolt, and firing pin were also EXO coated. However, that is not a deal breaker for me and I plan on only buying these BCGs for my future builds.

Reviewed by: Tuan Le from Orange County CA on 8/6/2014

7.62x39 Bolt

The only word is awesome. I put this Bolt in a 7.62x39 upper and after trying 10 different types of ammo from cheap to high dollar custom loads was able to shoot a .49 inch 5 shot group at 100 yards with Winchester 123gr sp. After the guys at the range saw the group, they all wanted to know what components I used, and were really impressed with the quality of this bolt. Great product, and I am planning on buying several more in different calibers for future builds.

Reviewed by: Rafael from San Antonio, Tx. on 11/11/2015

Great BCG All Around

I built a Colt Sporter Rifle in 7.62 and was looking for something to fulfill my need. I originally went with a Radical Arms BCG that completely sucked. It was on sale for $100 and had great reviews so I took a chance. After stove piping every round (faulty extractor) I sent it back and looked for something of higher quality. I came across this one and didn't have a lot of knowledge of BRA but was willing to take a chance. Once the unit arrived, I manually cycled a few rounds through it before wasting time and money (ammo/range fees) shooting at the range. Everything went smoothly with no hiccups. I took it to the range and put 100 rounds through it with ASC mags and it ran flawlessly. My only gripe is that it went on sale for $20 less a week after I received it. I guess that's just the way the cookie crumbles. BTW, I wouldn't think of taking a star away for that, just adding it to the story. I would buy again and recommend to anyone who was in the market.

Reviewed by: (Verified Buyer) Kedian Taborn from Charlotte, NC on 11/21/2015

Very fast service!

Just ordered the 7.62X39 BCG and BBL. shipped in less than a week!

Reviewed by: Randall from Temecula, CA on 1/15/2014

Simply Incredible!!

I think the only thing that surpasses the quality and craftsmanship of this BCG is the customer service I received from Charles and Teresa.. And that is really saying something!! Because this really is an Incredible product!! After being a machinist for over 25 years you not only get a feel for quality but you can really see it in the products from Black Rifle Arms!! I've been building this rifle for over a year and being on a budget it has made me to shop for the best I could afford.. I could have spent less but that's what I would have had!! I also purchased one of their Ballistic Advantage barrels.. I believe the BCG and Barrel from BRA is the heart of this build!! From the first round fired in a Lead Sled to the 100th round on Saturday and using C Products Defense Mags, this rifle preformed and acceded my expectations!! I can't say enough about the products and the Great folks at BRA!! They have a customer for life!!

Reviewed by: John Wade from Dunnellon, FL. on 6/1/2015

Awesome BCG

I just received my 7.62x39 BCG in the mail this week and took it out for a test drive in my brand new AR47 build. I shot 150 flawless rounds without a single issue or stoppage, even during a mag dump. It's a perfect companion for my Aero Precision M4E1 and Green Mountain M4 barrel. This is now my favorite rifle! Excellent design and quality. Thanks!

Reviewed by: djhughes017 from Pasco, WA on 7/11/2016

I purchased this BCG after utilizing the black rifle bolt and enhanced firing pin combos. I use this item in a 20" AR and I am very satisfied with its performance. Quality built and ability to cycle all types of ammo is also a plus!

Reviewed by: (Verified Buyer) JOHN FLOYD from South Carolina on 7/26/2014

Mr.

I purchased the 7.62 bolt and installed it in a new upper. I have tried all types of 7.62 ammo from FMJ to Round nose; steel case and brass All ammo tried so far runs perfectly. This is a high quality part.

Reviewed by: jason b from PA on 9/20/2016

Great product

I purchased this bolt carrier group with the enhanced firing pin and installed it in a 7.62x39 upper. When I received it, the BCG looked great, the coating just gleamed. I was impressed by it's fit and finish. I assembled the AR and am pleased to say, after adjusting the gas block, that it cycles reliably. I also purchased C products 30rd mags from black rifle and they feed properly, as well.

Reviewed by: Tim Turner from Las Vegas on 5/11/2017

7.62x39 bcg

bought the 7.62x39 bcg a few months ago and shot my ar twice with the new upgrade,definitely worth the money great product well made, no issues. thank you u guys . keep up the good work. wondering if you guys will make tin finish bcg?

Reviewed by: Giancarlo Robles from anaheim ca on 7/2/2017

Waiting to purchase another

My 4th AR will close to duplicate my second that has this BCG. Looks precision machined and runs well.

Reviewed by: Mike Witzgall from Northfield on 11/16/2021

armorer/builder/toolmaker

I took a chance on getting three of these before ever using one, based on the reviews I saw here. LOVE LOVE LOVE them. Plug n Play on Anderson lowers and Hardened Arms uppers. The finish is great, and I like what I see, or don't see for machining marks. I was sceptical about the buffer, but it is a few thousandths bigger than the carrier, and it will definitely save some wear and tear. I will be back for my next build.

Reviewed by: (Verified Buyer) Raymond from Milwaukee, WI on 11/1/2018

you get what you pay for

welp, i have ordered a nickel boron bolt before, from palmetto for a 556. i talked to Charles, for quite some time and took a leap of faith, as he was trying to help me figure a problem, with a competitors product. this thing, compared to palmetto's bolt, no comparison. im in awe. it is obviously smoother just from drawing back the charging handle. no lube on it, buttery smooth. now i sprayed it a tad after initial use, which it ran flawlessly, even though my factory bolt didnt! and it ran great, wet or dry. i cant say whether or not the buffer helps in smoothness, i feel as though it does, and logically it should, but unless your paying attention, you probably wont notice. in the end, just buckle down and order it, once you have one, youll swap out every gun you own!

Reviewed by: Perry from Lucas on 8/28/2018

View all Q&A

Q: Will this work in bear Creek upper for 762x39/12.7x42

Asked by: Krystal - 9/8/2025

A: YEs this is will work with BCA AR 762x39/12.7x42

Answer provided by: Administrator (9/25/2025)

Q: I wanted to ask if this BCG will work with a 12.7×42 upper receiver in an AR-15 or would I specifically need a different BCG

Asked by: Joshua Reyes - 8/1/2025

A: Yes if your upper is designed around the 7.39x39 bolt assembly and Bolt Face is .125" recess this bcg will work fine.

Answer provided by: Administrator (8/1/2025)

Q: Will this BCG work in an AR47?

Asked by: Kenny - 6/25/2025

A: No because the bolt carriers for a AR47 are specc'd to accept AK magazines.

Answer provided by: Administrator (7/18/2025)

Q: Will this fit PSA KS-47 Upper?

Asked by: Joseph Luongo - 5/31/2025

A: No, our bolt carriers are AR-15 bolt carriers, and; therefore, will not work with AK magazines. Bolt carriers and Bolt Assembles that take AK mags have different specc's to clear the AK magazines.

Answer provided by: Administrator (6/1/2025)

Q: Are you using a modified 5.56 AR15 bolt or is a true AR10 7.62 heavy walled wall bolt and extractor

Asked by: Donald R Wargo - 2/18/2025

A: The 7.62x39 is on the AR-15 platform there for utilizes an AR-15 Bolt Carrier therefore takes a AR-15 size bolt. You can't use an AR-10/.308/7.62x51 bolt in an AR-15 platform. More about our AR-15 7.62x39 bolt assembly:
-Bolt Face is .125" recess
-Bolt body produced from AISI 9310 VAR (Vacuum Arc Remelt), the highest standard bolt material made
-Melonite
-HTP/MPI test, our material is checked prior to machining by our supplier of 9310
-Machined completely in one operation; this eliminates tolerance and repeatability issues that arise from multiple fixturing processes used by other manufacturers
-Enhanced Design for utmost reliability
Tightly controlled proprietary heat treat process to accurately control cast depth and core hardness
-NSCW Crane Division extractor upgraded with Viton® O-ring
-5 coil spring, and plunger
-Extractor produced from MIL-S-5000 Steel
-Extractor Produced from MIL-S-5000 Steel
-Vacuum Hardened
-Phosphate
-Machined

Answer provided by: Administrator (2/21/2025)

Q: What oilwould you recommend for a nib bcg, i have hoppes#9 but ive heard it doesn’t do good with nib finishes bcg

Asked by: Jose - 9/14/2024

A: Any cleaner that does not have an ammonia base. Also do not use FrogLube products, we had one customer soak it and caused discoloration. If you are trying to restore it back to a shiny coat you can clean and then use a polishing wheel and Mothers Mag and Aluminum Polish. We like the ALG Go Juice for oil.

Answer provided by: Administrator (9/24/2024)

Q: Will this work with a psa ks47 upper?

Asked by: Delta Juliet - 2/17/2024

A: No this BCG will not work with PSA KS47 Upper. The cuts done on PSA KS47 on the bolt carrier and bolt assembly are specc'd to accept AK Mags.

Answer provided by: Administrator (2/19/2024)

Q: Do you guys know when this will be back in stock?

Asked by: Eduardo Aguilar - 11/3/2023

A: At this time there is no ETA. It won't be by end of this year. Hopefully around the 1st quarter of 2024.

Answer provided by: Administrator (11/8/2023)

Q: Will this bcg work with the duramags 28rounnd magazine in a radical firearms ar15 7.62x39

Asked by: Zach - 10/11/2023

A: Yes, it will work unless Radical does their own proprietary rifle, but our bcg will work in any AR-15 7.62x39 mil-spec lower/upper receivers.

Answer provided by: Black Rifle Arms Sales Team (10/11/2023)

Q: Hello, Could I get this unit without the bolt? If so, what would cost be for 10? Thank you.

Asked by: Brian Rinauro - 6/24/2023

A: We sell this item as just the bolt carrier itself and pricing for quantities is listed on the products page: https://www.blackriflearms.com/M16-Enhanced-Bolt-Carrier-and-Key-with-Buffer-Technology-_p_20.html

Answer provided by: Administrator (6/28/2023)

Questions about this item? Ask here.

Black Rifle Arms has a Limited Lifetime Warranty on our Bolt Carriers against manufacturing defects.

Modification(s) or alterations to any part of Black Rifle Arms Bolt Carriers VOIDS warranty and will be non-refundable, nor replaced

Small Parts that make up the bolt carrier group are NOT UNDER WARRANTY as they are known parts to fail under normal use, these parts include:

Bolt Assembly/Extractor
Cam Pin
Firing Pins
Retaining Pin

See more under our WARRANTY PAGE:

Bolt Assemblies and Extractors: due to the bolt face/extractor designs they have a much higher failure rate due to the bolt face dimensions and thickness bolt assemblies/extractors. While we do designed our bolts and extractors with beefier spec's there are certain things that expediate bolt/extractor failures. Some examples but not limited to:

Tula Ammunition and Red Army are extremely hard on 7.62x39 bolt assemblies and extractors. We have tested these particular brands on many occasions and have found that cartridges tend to get stuck and/or casings do not shrink properly which causes undue stress on the extractors and the bolt lug next to the extractor. This will contribute to premature failures of these parts.

Overgassing! Overgassing is another issue we see most common in premature bolt assemblies and extractor failures. We recommend shooting through a chronograph to get proper cyclic rates. If you are overgassed then to slow down the bolt carrier you can use a heavier buffer such as an H2 to get proper cyclic rates which allows for the casing to shrink further before extraction takes place thus reducing the stress of the bolt assembly and/or extractor.

Barrel Extensions with a large wide single feed ramp with no middle lug does not support the bolt assembly properly.

Due to the nature of this caliber and thinned out bolt/extractor consumers understand that this caliber has a high failure rate to the extractors and bolt lugs and because certain aspects can contribute to premature failures outside of our control that put undue stresses on the extractor/bolt lugs we will not warranty bolts and extractors.

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