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Thread: LMT Enhanced bolt

  1. #241
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    You know it would be nice if folks who own LMT enhanced bolts posted in the LMT enhanced bolt thread and folks who owned LMT enhanced carriers posted in the LMT enhanced carrier thread... I'm not bitching because I do appreciate the media but it gets a little confusing when people don't read before they post.
    “The rifle itself has no moral stature, since it has no will of its own. Naturally, it may be used by evil men for evil purposes, but there are more good men than evil, and while the latter cannot be persuaded to the path of righteousness by propaganda, they can certainly be corrected by good men with rifles." - John Dean "Jeff" Cooper, The Art of the Rifle

  2. #242
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    Quote Originally Posted by DreadPirateMoyer View Post
    Might still be a MIM key, just with the mark somewhere not visible.
    Or simply machined off…


    Quote Originally Posted by EzGoingKev View Post
    None of the gas keys are chrome lined
    Thats because LMT nitrocarburizes them, which is black and looks the same as a non-coated plain parkerized key (like a DPMS)

  3. #243
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    Quote Originally Posted by Mall_Ninja View Post
    Or simply machined off…




    Thats because LMT nitrocarburizes them, which is black and looks the same as a non-coated plain parkerized key (like a DPMS)

    A nitro'd/melonited gas key would actually be a good thing. I have never heard this before, though. Do you have a source for this info? I'm interested....
    "That thing looks about as enjoyable as a bowl of exploding dicks." - Magic_Salad0892

    "The body cannot go where the mind has not already been."

  4. #244
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    Quote Originally Posted by BufordTJustice View Post
    A nitro'd/melonited gas key would actually be a good thing. I have never heard this before, though. Do you have a source for this info? I'm interested....
    They actually went to melonite a couple of years ago.

  5. #245
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    Quote Originally Posted by mtdawg169 View Post
    They actually went to melonite a couple of years ago.
    Roger. Good to know and thank you.

    So I guess my gen4 carrier has that feature.
    "That thing looks about as enjoyable as a bowl of exploding dicks." - Magic_Salad0892

    "The body cannot go where the mind has not already been."

  6. #246
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    "The only finding I discovered is that when I brought it home I disassembled the BCG to inspect the internals. I noticed the cam pin had quite a bit of wear for so few rounds through it. I reassembled the BCG without cleaning but I did add some more fireclean clp. "

    I just remembered that the LMT cam pin broke in my gun (CMMG mid-length, LMT enhanced bolt and enhanced carrier) after an unknown number of rounds (a few thousands?). I discovered it when I took it apart for cleaning, so, no telling when exactly it happened.

  7. #247
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    Quote Originally Posted by BufordTJustice View Post
    Roger. Good to know and thank you.

    So I guess my gen4 carrier has that feature.
    No problem. Sorry for the short response, but I was in the car. I would think yours does have it. If you don't see chrome in the gas key, it should be melonited. I think they started doing it around the time they went to MIM keys.

  8. #248
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    Quote Originally Posted by mtdawg169 View Post
    I think they started doing it around the time they went to MIM keys.
    Thats my understanding as well. Seems like cutting costs going to MIM allowed for the added cost of Meloniting. Seems like a good choice to me. Id rather have a Melonited MIM key than a standard chrome lined one...

  9. #249
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    Quote Originally Posted by Mall_Ninja View Post
    Thats my understanding as well. Seems like cutting costs going to MIM allowed for the added cost of Meloniting. Seems like a good choice to me. Id rather have a Melonited MIM key than a standard chrome lined one...
    I really do not think it makes a difference as you do not see gas key failures. You do see gas key bolt failures though and I would rather see money spent on a high quality fastener.

  10. #250
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    Quote Originally Posted by EzGoingKev View Post
    I really do not think it makes a difference as you do not see gas key failures. You do see gas key bolt failures though and I would rather see money spent on a high quality fastener.
    Agreed, if you mean "failures" as in "broken". In my opinion, the "wear" of the sides of the gas key in the upper and the erosion from the gas tube is where I think the Melonite is the better choice. It may even be preferable for the fasteners to be a bit soft rather than risk being too hard. Being able to spring and absorb energy rather than risk a fracture (yield) seems a better choice. Even if the Allen or Torx portion gets distorted a little, I still consider them to be a one time use fastener anyways. As long as they can later be removed its a non-issue. Even if they get distorted enough to not be removed easily later (not likely as the direction is opposite), thats an easy fix as well with an end mill or drill press...

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