7.62X39 AR15 BCG

(36 reviews)
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Machined in house and assembled using only the finest steels and components.

KAK Industry takes pride in producing some of the finest Mil-Spec AR15 bolt carrier groups available, made 100% in house at our MO facility using the latest in robotics manufacturing tech

  • Carrier- machined from aircraft/bearing quality 8620 steel, heat treated, ground to perfection
  • Profile- M16 full auto profile carrier with correct sear trip placement
  • Bolt- Machined from aircraft/bearing quality 9310 steel, heat treated properly, precision ground, standard .125 bolt face depth, MPI Tested
  • Firing pin- Machined to the mil-spec print from 8740, precision ground, properly heat treated
  • Extractor- Machined enhanced billet extractor - phosphate coated
  • Ejector- S7 tool steel ejector and extractor retaining pin
  • Gas Key- 4130 steel, nitride treated, precision staked using our hydraulic staking machine

For 7.62x39, 9x39, or similar, designed to run both steel and brass cased ammo








  • 5
    This is a Game changer

    Posted by David on September 10, 2020

    I have not had one malfunction. It works.

  • 5
    works great

    Posted by Kevin on June 28, 2020

    works great! what more can you ask for?

  • 5
    Blown away!

    Posted by Gregory on August 21, 2019

    What can I say other than thank you KAK! I paired this BCG with an 18" KAK barrel and it's been nothing but flawless. I noticed the craftsmanship right out of the box, very well made. KAK listened to their customers and added their logo so not only is it a quality BCG, it's also a work of art. I smile every time the ejection door drops down. My next build will be built around another KAK barrel & this lovely BCG.

  • 5
    Great BCG

    Posted by Adrian on October 30, 2018

    I purchased this for a AR build and it does exactly what it’s suppose to. Even with steel cases!

  • 5
    Better than I expected

    Posted by Jerry on October 24, 2018

    The 7.62x39 BCG I bought exceeded my expectation. I was expecting a basic, mil spec fit and finish for the price, but was pleasantly surprised. The finish was what looks to be DLC, or ion bond maybe. And, the machining, and quality of the bolt is outstanding. The pictures are deceptive in the best way. They don't look as good as the actual product!

  • 4
    Very pleased with BCG

    Posted by Lee on November 30, 2017

    Iwas very pleased with speed and accuracy of order. All items worked well in my AR 47 build.

  • 5
    Buy this bcg for your x39

    Posted by Matt on October 29, 2017

    Purchased one in September then returned in October for another; one can not provide a better review. Buy with confidence for your x39 build.

  • 5
    Excellent Value

    Posted by Cary on August 31, 2017

    Since the company I work for, WC, doesn't offer 7.62x39 I sought out the best value barrel and BCG for 7.62x39. I need to shoot alot and cheap plus its is a good SHTF round. This has been a very pleasant surprise! Quality is superb and that is coming from someone who works for high end company. Everything has worked flawlessly and has been a great joy to shoot. I will buy again.

  • 5
    it works

    Posted by D-Unit on April 24, 2017

    after struggling for weeks to get my 7.62 build functioning properly, i ordered the kak bolt, it finally works, so far ran about 250 rounds through it, only misfired 3, Id say its 99% functional and reliable now, new bolt might just need broken in a little more to lose her up some. I would highly recommend it though