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Thread: Re: New LMT purchase and buffer question

  1. #1
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    Re: New LMT purchase and buffer question

    I just purchased a LMT complete lower to go with a complete 16" LMT upper that I had previously purchased. It is my understanding that the LMT lower comes with a standard carbine weight buffer (the buffer has no markings) and my complete LMT upper came with a LMT S/A BCG. Should I switch out the buffer for a H buffer and if so which one? What about the buffer spring, should I change it as well? I have also been looking at the Ion Bod M-16 BCM BCGs from Denny's Guns (GTS). Should upgrade my LMT S/A BCG to the Ion Bod M-16 BCM BCG at the same time? Is all this just a wast of money and the stock items are all I need for a reliable goto AR? Thanks in advance for your responses.

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    I say don't fix what aint broke, but I tend to be one that can't leave well enough alone and end up fixing it til it is broke. If your rifle is running fine with the standard buffer, don't worry about it. And I think the S/A BCG is fine too. LMT's are usually GTG, and I assume that's one reason you went with them. That said. If you have the money and are feelin froggy fix it til it's broke! Just remember take off parts lead to new rifles!

    -RD62

  3. #3
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    LMTs run a little smaller gas ports and will run fine on a CAR weight buffer. If you experience extraction problems while using the CAR buffer (very unlikely) then upgrade to a H buffer.
    Chief Armorer for Elite Shooting Sports in Manassas VA
    Chief Armorer for Corp Arms (FFL 07-08/SOT 02)

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    Thanks, I guess I will find some other accessory to spend my money on, like a DD Omega rail.

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    Quote Originally Posted by flyer View Post
    Thanks, I guess I will find some other accessory to spend my money on, like a DD Omega rail.
    Good choice!

    -RD62

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    sounds like we're building the exact same thing.

    16" LMT bought as complete upper/lower,bought the SA carrier before i knew better.

    just added the Omega rail....

    i went ahead and added the H-buffer though.

    i figured it might be usefull,especially with the SA carrier...and it was only $20 or so.

    reduced wear?

    runs great,although it did before as well.

  7. #7
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    Quote Originally Posted by gotm4 View Post
    LMTs run a little smaller gas ports and will run fine on a CAR weight buffer. If you experience extraction problems while using the CAR buffer (very unlikely) then upgrade to a H buffer.

    Hello everyone. First post here.
    If LMT is using a smaller gas port will that have any effect on the chamber pressure?

    BTW This is a great site! It has really opened up my eyes with all things concerning the M4. So much bad information out there and if is good to hear from people with first hand knowledge.

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    Quote Originally Posted by Wesley Engle View Post
    Hello everyone. First post here.
    If LMT is using a smaller gas port will that have any effect on the chamber pressure?

    BTW This is a great site! It has really opened up my eyes with all things concerning the M4. So much bad information out there and if is good to hear from people with first hand knowledge.
    No. Gas port size has nothing to do with chamber pressure. Chamber pressure is regulated by the ammo and chamber size and how they work together.
    Chief Armorer for Elite Shooting Sports in Manassas VA
    Chief Armorer for Corp Arms (FFL 07-08/SOT 02)

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    gotm4,

    Thanks. After I thought about it for a second it made sense. I was thinking about pressure being less on the gas key, which has nothing to do with chamber pressure. Brain fart.

  10. #10
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    I got this grom Gene Swanson in a email.


    "I run H buffers in all of our rifles. From 10.5 up to the 16 inch. I also run a lot of full auto so the H buffer slows things down a bit."



    Gene Swanson

    Technical Specialist

    Lewis Machine and Tool Co.

    1305 W 11th Street

    Milan, IL 61264

    PH:309-787-7151

    FX: 309-787-7193

    SwansonG@lewismachine.net

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