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Yes. This is it. The whole enchilada. It is the full-auto enhanced carrier AND the enhanced bolt.


(8 customer reviews)

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NSN: 1005-01-650-2818


If our standard bolt carrier group is the infantryman of the gun industry, then our enhanced BCG is the delta operator.  This carrier group was designed to function effectively in full-auto, suppressed, and short barrel weapon systems, and it is made of materials far more durable than your standard fare.  Quite simply, it’s the best possible upgrade for your rifle to increase reliability and functionality.

Behold the laundry list of enhancements our design brings to the table:


  • Altered cam path for longer dwell time and more robust extraction
  • Modified gas hole improves gas flow across the bolt’s tail
  • Additional gas ports on right side and modified orientation to improve gas flowing through the ejection port, and not into your face
  • Relief grooves added to the top and bottom to channel debris and maintain fluid movement


  • Built from a proprietary material that is not only stronger than the standard bolt but easier to clean as well
  • Modified locking lugs provide flexibility and durability in dealing with high-pressure, overgassed loads
  • “Lobster tail” extractor utilizes two springs to allow stronger and more consistent extraction with drastically improved spring life




0.696 lbs

Operating Method


Bolt or BCG

Additional information

Weight 10 oz
Dimensions 9 × 1 × 1 in

8 reviews for LMT FULL-AUTO ENHANCED 5.56 BCG | R-L7Q3

  1. rudyf1951 (verified owner)

    $454 is a lot of money for a BCG, but it is a LMT-BCG, they are worth every dollar, this is number #2 (one month later). Lewis Machine & Tool I never heard of the company, I wish I had, I would have bought a whole AR-15 and not built another. I’m going to see, what the big difference is between a standard BCG costing about $175.00 to the LMT-BCG. Update later on the difference.

  2. Jake Webber (verified owner)

    If you know you know, and since you are reading this you already know exactly what BCG you are looking at here. It doesn’t get any better than this. A Tier 1 product that was made for Tier 1 operators. 99% of shoots don’t need this expensive, rugged, and reliable tool… but the 1% that do, can bet their life on it over and over again for years and thousands of rounds to come.

  3. redsho212 (verified owner)

    The best bcg and the best place to get it! USPS lost my package and Big Tex sent another 1 out right away! 10 out of 10 service

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