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Thread: Newly assembled M1 Garand with Late Timing

  1. #1
    Machine Gunner
    Join Date
    Oct 2020
    Location
    MI, USA
    Rounds Down Range
    140
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    question mark Newly assembled M1 Garand with Late Timing

    So i recently assembled an M1 Garand that has a late timing issue. It was assembled with NOS parts for internals, a rebuilt op rod from Columbus Machine Works and a new op rod spring. I checked with a timing block (yes i had it in correctly) and the bolt will not release. i replaced the bullet guide with one measuring .183 still no release. then changed in this order, 2nd op rod catch, 3rd op rod, 4th follower rod w/ spring. the clip will lock in but bolt never releases. I then peened the bullet guide cam lobe to larger than .183 with original NOS internals and it releases as it should. Should i just leave the oversized bullet guide cam lobe in it or is there a fix i am missing? i have several other M1 Garand rifles and corrected this same issue on 2 of the with the same issue with a simple bullet guide change.

  2. #2
    Section Leader
    Join Date
    Apr 2011
    Location
    Jacksonville, OR
    Rounds Down Range
    709
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    Re: Newly assembled M1 Garand with Late Timing

    Yep... If it works, leave it alone.
    www.tedbrownrifles.com

    Member and Recommended Armorer

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  4. #3
    Machine Gunner
    Join Date
    Oct 2020
    Location
    MI, USA
    Rounds Down Range
    140
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    Re: Newly assembled M1 Garand with Late Timing

    i think i may take the bullet guide that is in it, get a good measurement on it. And build up the cam lobe with weld and file to size.

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