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Thread: LMT Enhanced Bolt Question

  1. #1
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    LMT Enhanced Bolt Question

    I am currently waiting for my LMT 16in upper to arrive.I ordered it with the full auto enhanced bolt carrier group.Now i have been reading that I may be better off with the regular bolt.I was just trying to get the best I could get.Other than maybe overspending, did I make a mistake?This is my first AR so bear with me.Are there any downsides to the enhanced bolt?

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    Quote Originally Posted by markdeerhunter
    I am currently waiting for my LMT 16in upper to arrive.I ordered it with the full auto enhanced bolt carrier group.Now i have been reading that I may be better off with the regular bolt.I was just trying to get the best I could get.Other than maybe overspending, did I make a mistake?This is my first AR so bear with me.Are there any downsides to the enhanced bolt?

    The enhanced bolt might work just fine, but they tend to be picky on ammo. If you only shoot mil-spec ball then you will most likely be ok.



    C4

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    I'd would just go with a Colt/FN/LMT or CMT M16 carrier and a regular bolt CMT MP tested bolt. I haven't seen a LMT 'enhanced' carrier work in anything but a 14.5" full-auto w/M855. It's a solution is search of a problem.
    You need 30 posts before you can post in the Equipment Exchange, I get at least 200 PMs asking me that annually...

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    Quote Originally Posted by gotm4
    I'd would just go with a Colt/FN/LMT or CMT M16 carrier and a regular bolt CMT MP tested bolt. I haven't seen a LMT 'enhanced' carrier work in anything but a 14.5" full-auto w/M855. It's a solution is search of a problem.

    I run two in two different 16 inch weapons and both cycle fully using everything from Wolf to M-193 spec ammo. And I run a heavy MGI RRB buffer in both.

    Perhaps they have fixed the issues in the later production.

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    I'm slow. What were these bolts supposed to "enhance?"

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    My LMT enhanced has run very well so far on mixed ammo.
    Stick


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    Quote Originally Posted by Dport
    I'm slow. What were these bolts supposed to "enhance?"

    They are supposed to be more resistant to breaking lugs due to design features in both the bolt and carrier among other things.

  8. #8
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    I thought the enhanced since it is chromed would be smoother cycling and easier to clean.Maybe I'm dense but what could cause a bolt upgrade to be finnicky pertaining to ammo?

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    I am very much a fan of the LMT Enhanced Bolt and Bolt Carriers; especially in full-automatic fire. I have LMT Enhanced Bolt and Bolt Carriers in all four of my M4 (Class 3, full-auto) carbines. Functionality and reliability is 100-percent in both semi-automatic and full-automatic fire.

    The oldest and highest round count I have on one of my LMT Enhanced Bolt and Bolt Carriers is now approximately 34,000 rounds; and, I have never experienced a stoppage or malfunction. This last weekend I went shooting and fired 2,000 rounds, mostly on full auto, without any problems.

    I especially like the idea that the LMT Enhanced Bolt and Bolt Carrier were designed to solve the functionality and reliability problems in the SOCOM M4A1 carbines. If it good enough for SOCOM, it is good enough for me!

    I highly recommend a LMT Enhanced Bolt and Bolt Carrier for your weapon!

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    It bears mentioning here that there are two specific different "enhanced" pieces that LMT offers.
    The "enhanced" bolt uses a whale-tail shaped extractor with two springs and has a relief on the lug opposing the extractor to equally load the remaining 6 lugs.
    It also has the sand cuts on the lugs.
    Then there is the "enhanced" carrier.
    This has a re-timed cam slot to allow for a slower un-locking of the bolt, an extra exhaust port, re-located gas vent behind the bolt tail and additional metal up at the front where the carrier hits the extension in normal use.

    You can get these features seperately, ie: enhanced bolt with a regular carrier or an enhanced carrier with a regular bolt, OR you can get a complete enhanced bolt carrier group.

    The enhanced carrier is NOT recommended for barrels shorter than 14.5" as it extends the unlocking time and those barrels have sufficiently short dwell times that can cause problems when you extend the unlocking time.

    I recommend the enhanced carriers on 14.5" and especially 16" carbines.
    I don't feel that the bolt is really worth the extra money, but some people like them because they are electroless nickel plated and have that cool extractor...
    Randall Rausch
    AR15 Barrel Guru
    California Precision Rifle Club founding member

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