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Thread: LMT Enhanced bolt

  1. #221
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    Quote Originally Posted by halmbarte View Post
    From the Armalite paper above:



    H
    Yeah I have seen that. But it describes something quite different than what the LMT pic above depicts...Almost opposite, as the LMT is "relieved" in the front and still has a rearward lug contact area?

  2. #222
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    I don't have a LMT Enhanced bolt in hand,and haven't talked to LMT about the lug design in that regard.But from what Ive read from Bill Alexander and other Industry Professionals the LMT and Armalite bolt lug modifications reach the same basic theory.Just two different patented designs/techniques.Obviously the LMT Enhanced bolt features a much more intricate design with many more features.
    LMT's standard bolt design using relieved lug root is solid engineering from what Ive heard from the Mechanical Engineer's(several) around me.
    Glock Certified Armorer
    Armed Protective Services II

  3. #223
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    I put 150 rounds through my rifle with the following specs today:

    Upper
    - Noveske factory assembled N4 Light Mid Length Chrome Lined with NSR
    - KAC MAMS 5.56 Brake

    Lower
    - LMT Lower Receiver
    - VLTOR A5 Receiver Extension with green springco spring

    Magazines
    - 3 very old PMAGs pre rev M with windows. Unknown round count but I have been using them for the last 7 years as my primary range mags.
    - 1 old bushmaster metal 30 round magazine. Very old and unknown round count.

    I know 150 rounds is practically nothing but the range I was planning on going to was closed today so I ended up at another place which only goes out to 22 yards. I wanted to shoot this today to figure out how it feels and whether this BCG is reliable with this configuration.

    I first ran two 30 round magazines of PMC 55gr which cycled flawlessly and had no issues out of two old PMAGs that I have.

    I then continued to load and shoot 60 rounds of 55gr tula ammo which cycled and locked back without issue.

    The remainder of the ammo was loaded and shot between 2 and 5 rounds a magazine to verify it cycles and locks back. It was all PMC 55gr and ran without any issues.

    Tomorrow I plan on putting 240 rounds through it. I wont be cleaning this rifle for at least 1k rounds to find out how this BCG does dirty.

    So far it seems like a good choice although very expensive. After reading IraqGunz's post on his experience with this BCG I am not surprised it ran.
    Last edited by og556; 09-10-13 at 22:31.

  4. #224
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    Quote Originally Posted by og556 View Post
    - VLTOR A5 Receiver Extension with green springco spring
    So just to be sure, you are using the LMT enhanced bolt AND carrier?

    Which Vltor buffer?

  5. #225
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    I second that...
    Looks like you posted in the wrong thread, this one is about LMT E-bolts, not the carrier...

  6. #226
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    Yes I am using the entire LMT Enhanced Bolt Carrier Group including the enhanced bolt. As far as I can tell it is a newer version. The bolt is marked "AE" and MPI. I'm not sure what AE stands for. The Vltor Buffer I am using is the standard A5H2 5.3oz buffer.

    I fired the remaining 240 rounds of PMC through my rifle at the NRA range today and had absolutely zero malfunctions or failures to lock back. I must emphasize that this particular setup is the most flat shooting AR 15 I have ever handled.

    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 should also mention that upon receiving the LMT E-BCG I noticed that there are some deep machining marks or scratches on the face of the lugs of the bolt. At first I was concerned and contacted LMT whereupon a gentleman informed me that since they do machine cut these bolts and do not phosphate coat them I may notice machining marks like the ones I describe but they should be fine. I will keep an eye on the marks on the bolt lugs I'm sure LMT will stand behind their product if issues arise.

    I apologize if my posts are not pertinent to this thread. I was simply trying to report my experiences the LMT Enhanced bolt and carrier group with my particular setup which according to some folks should not run.

    Moderators if the content of my posts are out of place for this thread pertaining to the LMT enhanced bolt please delete them at your discretion.

    I will report after I have over 1,000 rounds with this particular setup without cleaning in a separate thread.

    Again I do apologize if my posts are not relevant to this topic please feel free to delete them.
    Last edited by og556; 09-12-13 at 01:03.

  7. #227
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    Quote Originally Posted by og556 View Post
    Moderators if the content of my posts are out of place for this thread pertaining to the LMT enhanced bolt please delete them at your discretion.
    Rest assured, the mods delete with the quickness around here. If they wanted your post gone it would have been within seconds...

    In fact, you may only read this in your email notification... lol

  8. #228
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    Haha thanks buddy. My only goal here is to learn and contribute any useful info when I can. Definitely not trying to stir any stuff up. I enjoy this community.
    Last edited by og556; 09-12-13 at 01:52.

  9. #229
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    Quote Originally Posted by og556 View Post
    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 have (2) LMT enhanced bolt carriers and found this as well.

    I attribute this to the sharp angle of the revised cam pin channel. I am hoping that they will smooth out as the round count climbs.

  10. #230
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    Yea I'm not too worried at this point but it is different from what I'm used to.

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