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Thread: Which BCG to use

  1. #1
    Join Date
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    Which BCG to use

    Hello guys, quick question for you. I am looking to set up a couple weapons, not sure what to do.

    I just got a BCM bcg in to compare, so now I have a question.

    I have a bolt carrier marked 1b1b6 (Toolcraft). Bolt is marked MPI, carrier is non-chrome lined. It is a FA carrier.

    I also have a S&W semi BCG, bolt marked MP. Chrome lined.

    I am not sure what to do here. I know that the FA carrier is preferred, at least partially for the added weight. I weighed 4 BCGs,

    The weights were:
    LMT 327g
    BCM 327g
    S&W semi 318g
    Toolcraft 320g

    So I know the proper weight for a FA BCG is 327g - but which of these BCG's do I throw in the spares box, and which do I throw in an upper?
    My first thought is the S&W Semi BCG is not really much less weight than the Toolcraft, and it is chrome lined so it will be easier to clean.
    Last edited by el_chupo_; 02-22-13 at 12:05.

  2. #2
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    The bcm gets used now imo

  3. #3
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    I have been using a BCM BCG in my Colt 6921 And have had Zero problems


    NRA Member

  4. #4
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    Sorry, left that thought incomplete. The BCM will go in a BCM upper. I was just able to use it, and the LMT, to compare these other two. One of which will go in another, backup/friend use gun, the other will be a spares bolt or get sold when I am able to pick up another known high quality BCG.

  5. #5
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    Given two carriers that are otherwise the same, I'd go with the heavier (non-neutered), but I wouldn't want a non chrome-lined carrier, myself. Of the two, I'd use the S&W.

  6. #6
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    Either the BCM or LMT. Both are top notch and good to go.

  7. #7
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    The BCM is going into a BCM upper I just received. The LMT is going back into my LMT.

    I am asking which of the other two I should use in a backup/loaner rifle. The Toolcraft or the S&W.

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