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Questions & Answers
Does it run with Steel case 762 Expert Answer

The Jacob Grey Firearms 7.62x39 Bolt Carier Group will work with steel cased ammo.

by Hunter, Gear Expert, January 18, 2023
Is the bolt head just a reamed out 5.56 bolt like most of them are? Or is this machined from scratch with thicker bolt head walls? Manufacturer Answer

It is machined as a 7.62 exclusive bolt.

by Jacob Grey, Manufacturer, October 12, 2022
Customer Reviews
Helpful Positive Review
Great BCG! by Alex D, December 14, 2022
It sounds like the other customer who posted a review had a completely different experience than me. I had no problems with the nitride coating on this bcg and the finish was smooth and unblemished. I have put about 500 rounds through this BCG and...
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3/3 found this helpful
Helpful Positive Review
Worked great in my AR style rifle. by Emmett, November 2, 2023
I didn't shoot that many rounds through it yet, but I wanted to make sure that I had a quality extractor and is the main reason that I bought this bolt carrier group.
1/1 found this helpful
Helpful Positive Review
Fantastic BCG by Sales Team, March 9, 2023
I paired this BCG with a Jacob Grey AR15 billet combo set for my 7.62x39 build. Once I completed my build it performed flawlessly. They manufacture a shock resistant extractor just for their 7.62x39 BCG's, while I was skeptical of how long it would l...
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1/1 found this helpful
Helpful Negative Review
Jacob Grey BCG by T. Douglas, Verified Owner, December 7, 2022
To start the nitride coating on this bolt carrier group is terrible. Coating is poorly nitrided and mine came blemished with scratches on it. I would return it to OpticsPlanet but their customer service is terrible. I ended up ordering a bolt carrier...
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1/2 found this helpful
Read All 4 Reviews

Product Discontinued by Manufacturer

Jacob Grey Firearms 7.62x39 Bolt Carrier Group (BCG) has been discontinued by Jacob Grey Firearms and is no longer available. Our product experts have helped us select these available replacements below.You can also explore other items in the Gun Parts, AR 15 Parts, Rifle Parts, AR15 Upper Parts, Bolt Carrier Groups yourself to try and find the perfect replacement for you!

Product Info for Jacob Grey Firearms 7.62x39 Bolt Carrier Group (BCG)

One of the best things about the AR-15 platform is the versatility it offers. Shooters can easily adapt to various scenarios and situations from a singular platform without the need for investing in completely new firearms. Switching out the upper assembly of an AR-15 can add new calibers, barrel lengths, and configurations in a short amount of time. Which is one of the reasons why Jacob Grey Firearms developed its AK variant of the AR-15. With the popularity of the 7.62x39 round it only seemed liked a natural progression for Jacob Grey to delve into the round where others fear to tread!! Several features on the JG-47 Upper receiver that we changed from a standard AR-15 Upper receiver are reinforced extractor on the BCG bolt, the power of the 7.62x39 round tends to put excess wear and stress on the standard extractors, so with reinforcing the extractor the shooter has less chance of malfunction. We use enhanced firing pins to make sure a solid connection is made to the primer of the 7.62x39 round. We did such a good job on the complete upper we decided to sell the BCG as a standalone item.image

Features of Jacob Grey Firearms 7.62x39 Bolt Carrier Groups:

  • Bolt Carrier Style: M16 Full Auto;
  • Bolt Face Depth: .125 (measured face to end);
  • Enhanced Firing Pin: 8740 Steel, center‐less ground and Hard Chrome coated;
  • Extractor: JG Enhanced Shock Resistant Extractor;
  • Mil-Spec Extractor and Ejector Springs, Firing Pin, Retaining Pin, Gas Rings;
  • Mil-Spec Heat Treated;
  • Lifetime warranty

Package Contents:

  • Jacob Grey Firearms 7.62x39 Bolt Carrier Groups

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Related Products to Jacob Grey Firearms 7.62x39 Bolt Carrier Group (BCG)

Jacob Grey Firearms 7.62x39 Bolt Carrier Group (BCG) Unavailable & Discontinued Models

List of Unorderable Models

  • USED Jacob Grey Firearms 7.62x39 Bolt Carrier Group BCG, Nitride, Black, 76239BCGN, EDEMO1, Used, Condition Fair , MPN: 76239BCGN-EDEMO1 , Code: 4M6-BCG-VR5-76239BCGN-EDEMO1
  • Jacob Grey Firearms 7.62x39 Bolt Carrier Group BCG, Nitride, Black, 76239BCGN , MPN: 76239BCGN , UPC: 850030294579 , Code: 4M6-BCG-VR5-76239BCGN
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