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Thread: Odd unmarked bolt carrier in new Colt 6920

  1. #11
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    Quote Originally Posted by scottryan View Post
    Your gun is factory.

    I've seen another few carrier that have that dimple on the rear.
    My recent 6920, Colt Defense Mfg



  2. #12
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    Quote Originally Posted by Paladin View Post
    My recent 6920, Colt Defense Mfg



    You guys rock. Mine is just like this, only no "C" mark. The dimple is identical however.

    Thanks again.

  3. #13
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    No problemo. Our last batch of Dept 6520's are a mix of Dimeco and Colt Defense parts. That pic was my personal 6920.

  4. #14
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    Question How about this?

    I got a BCG like the one jar420 has, except mine has:

    -no dimple(hardness test mark)
    -no C or D stamped on side
    -bolt is stamped MP on top and AM stamped on bottom.
    -also carrier is full auto

    Can someone tell me if this is Colt and or Diemaco?

    BCG came from a supposedly and hopefully a factory colt 6920 upper.

    I verified the barrel is Colt per:
    -C MP stamp
    -white paint near barrel nut
    -4 stamped on barrel extention

    And I verified the receiver is Colt/Diemaco per:
    -D and A slashed stamped on side
    -M4 stamped above gas tube

    Please let me know, appreciate any replies

  5. #15
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    Quote Originally Posted by startedwith1 View Post
    I got a BCG like the one jar420 has, except mine has:

    -no dimple(hardness test mark)
    -no C or D stamped on side
    -bolt is stamped MP on top and AM stamped on bottom.
    -also carrier is full auto

    Can someone tell me if this is Colt and or Diemaco?

    BCG came from a supposedly and hopefully a factory colt 6920 upper.

    I verified the barrel is Colt per:
    -C MP stamp
    -white paint near barrel nut
    -4 stamped on barrel extention

    And I verified the receiver is Colt/Diemaco per:
    -D and A slashed stamped on side
    -M4 stamped above gas tube

    Please let me know, appreciate any replies


    Hmmm. Your BCG sounds like an LMT. Got any pics.

    C4

  6. #16
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    here's some, hope it helps








  7. #17
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    Looks like an LMT to me. At least the bolt does anyway.
    Last edited by spamsammich; 07-28-11 at 17:26.

  8. #18
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    Thanks for the quick replies. So possible a LMT at least the bolt. May I ask why it could be LMT?

    Anyone on the carrier? I can post more pictures if need a specific angle.

    You guys are awesome!
    By the way I'm new here, just let me know what I can do to make things better.

  9. #19
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    Stress relief cut underneath the lugs of the bolt and the markings. LMT does both of those things. Nobody else does as far as I know.

  10. #20
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    I've done a lot of hardness testing and it's never left a dent as big as what's on that carrier.

    I know I haven't seen it all, but unless you use a cheezy Telebrineller hardness tester, the dent left from the test is very small, probably unnoticeable under a parkerized finish.

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