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Thread: LMT Bolt Damage

  1. #61
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    Quote Originally Posted by Blankwaffe View Post
    I picked up another LMT BCG from Bravo Co. while I was ordering some mags.
    Got it in saturday.The bolt is marked MP on one side and Z on the other.Its not machined or finished nearly as well as the BCG I got from G&R.
    The bolt has a similar blemish and a few dings on the lugs.Also some sharp edges/bur on the lugs from machining.Made me almost break out the deburring tool.I would think shot peening would clean the edges better. All parked over,so apparently LMT has no problems with dinged up bolts.
    The bolt carrier has heavy mill marks on the tail section...kinda cobby in my eye's as a mechanic's point of view.Almost looks like machine work Ive seen in late war WWII German weapons manufacturing.
    Not a function issue as I can see it so I guess thats why they let them pass after test firing.
    But there seems to be a quality difference in quality from different lot#.
    I tell you what I have shot thousands and thousands of bolts for LMT in the past and I never seen anything like that or passed anything like that, but that was also a year ago.
    Former LMT test/ assembly/ machinist
    Former Rock Island Arsenal / machinist

  2. #62
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    Koniz,
    The LMT BCG I ordered from Bravo had just got back into stock.They had been out of stock for a few days and asked to be notified when they were available by email.
    So apparently this BCG is fresh from LMT.The Z proof on the bolt kinda threw me off as I have not seen one marked with that yet.
    Regardless its not machined or finished nearly as well as the one I got previously from G&R.
    Since you work for LMT is there a certain way to identify the bolts and carriers?
    I know the fasteners used on the carrier keys are a bit different than what is used by other manufacturers.
    Do the proofs such as Z or AB indicate a lot# or is a actual firing or inspection proof?
    Give us some details if you can.

  3. #63
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    Update:
    Sent my bolt back to LMT yesterday (08-18). Stand by for more...
    Stephen
    Molon Labe

    "The Father wove the skein of your life a long time ago. Go and hide in a hole if you wish, but you won't live one instant longer. Your fate is fixed. Fear profits a man nothing." Herger the Joyous

  4. #64
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    Update:

    And the verdict is........








    Cuts from the burr knife used in the deburring process.
    Stephen
    Molon Labe

    "The Father wove the skein of your life a long time ago. Go and hide in a hole if you wish, but you won't live one instant longer. Your fate is fixed. Fear profits a man nothing." Herger the Joyous

  5. #65
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    so are they sending you a new bolt ?
    WHO ME ? ---- A government big enough to
    give you everything you want, is
    strong enough to take everything
    you have.
    -- Thomas Jefferson

  6. #66
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    Not to my knowledge.
    Stephen
    Molon Labe

    "The Father wove the skein of your life a long time ago. Go and hide in a hole if you wish, but you won't live one instant longer. Your fate is fixed. Fear profits a man nothing." Herger the Joyous

  7. #67
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    Well thats a bit of a disappointment...I personally would have tossed that bolt if I was doing the QC inspections.If it was sent back with a complaint of an obvious defect I would have certainly tossed it and sent a new one out.
    Spent a couple years working for DNE doing QC inspections before assembly.I would have been pulled from the line for letting something pass with obvious machine,tooling and or final finish damage.
    I guess if it does not affect function they let it roll.
    Grant just got some fresh LMT BCG's in stock and I ordered one from him yesterday.This will be my third LMT BCG in the last month,so Im building a good collection of recent assemblies.
    I will see what it looks like.
    If its a bit rough as well I will be buying BCM from now on without a doubt.

  8. #68
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    Quote Originally Posted by Neeglik View Post
    Not to my knowledge.
    Well that's disappointing, not to mention kind of iffy. I realize the deburring marks have no actual effect on performance/reliability, but you would think they'd send you a new one for "piece of mind". Would you purchase another LMT BCG in the future based on this?
    Best Regards,
    28_days

  9. #69
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    "Would you purchase another LMT BCG in the future based on this? "

    I honestly don't know...
    Stephen
    Molon Labe

    "The Father wove the skein of your life a long time ago. Go and hide in a hole if you wish, but you won't live one instant longer. Your fate is fixed. Fear profits a man nothing." Herger the Joyous

  10. #70
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    NO
    WHO ME ? ---- A government big enough to
    give you everything you want, is
    strong enough to take everything
    you have.
    -- Thomas Jefferson

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