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Thread: Remove excess material from LMT ambi safety

  1. #1
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    Remove excess material from LMT ambi safety

    I finally got around to putting together the “stripped” MARS-L lower I bought a couple months ago. Used a SOLGW blaster kit for the needed lower parts and Geissele G2S.

    Once I got it together yesterday, I noticed the safety seemed to stick a little over halfway to fire; I could force it through though, so thought it might just be a little tighter tolerances.
    I dropped a little lube around the safety and started flipping it back and forth for a while. Didn’t fix it, and seemed to see a little wear on the safety detent. I dropped in a new safety detent from spare parts kit I had on hand. No change. Also tried a spare detent spring. No change. At this point, I’d already looked at the LMT safety selector and seemed to see a ‘burr’ (?), but wanted to confirm that the mark hadn’t somehow been caused by the SOLGW kit, since LMT has a stellar reputation.

    Today, I pulled out the trigger and replaced the safety lever with a slightly used PSA selector that I took off my SBR a long time ago. Replaced the SOLGW spring and detent. Golden, no snagging.

    So to my comfort level, I’ve diagnosed the problem and now have to fix it.

    The question: What’s the recommended method of “cleaning out” the LMT safety?

    Secondary question: The detent point has been worn down a little, but it positively engages; should I concern myself with replacing the detent?

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    Last edited by JediGuy; 01-14-19 at 20:31. Reason: Changed double picture
    “God doesn’t need your good works, but your neighbor does.” - Luther

  2. #2
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    Quote Originally Posted by JediGuy View Post
    The question: What’s the recommended method of “cleaning out” the LMT safety?
    Jeweler's File
    Fine Stone
    >600 emery cloth

    Go slow, be precise, do pretty work.

    Secondary question: The detent point has been worn down a little, but it positively engages; should I concern myself with replacing the detent?
    Really, the your imprecisely made detent plunger doen't need to be pointy. Pointy is cheaper to manufacture than rounded. Let it ride.

  3. #3
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    It takes a tremendous amount of wear to make a detent not work properly. It should be fine.
    I'm a firm believer in "Truth" "Justice" and "The American Way". But, "The American Way" in which in I believe, is of "Days Past" probably before I was born. As this concept is always "evolving", I can't say I like where it is headed. Dan.

  4. #4
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    Thanks for the replies. As info, I also emailed LMT over the weekend, and Aaron reached out to me by phone today. After explaining and sending pictures, he’s sending out a replacement, plus a new detent. Thumbs up for the customer service.
    “God doesn’t need your good works, but your neighbor does.” - Luther

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