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Thread: Pump mag leaking

  1. #1

    Pump mag leaking

    Been working on my pump mag, and it has developed a slight leak down the barrel, but only when it is in the fired/bolt forward position. If I cock the bolt back no more leak. I am thinking this is just the spacer o ring, I would not think I would need to change the spacer? I am running a minimag valve.

    Here is another question, This valve has a spring in the tube. I never have taken it apart before today, so never noticed it. I looked on the AGD home page and didn't see any reference material for it. Any info would be appreciated

    Last edited by wd3d; 04-13-2014 at 11:52 AM.

  2. #2
    Join Date
    Jan 2002
    Halifax, N.S., Canada
    If it is leaking after you fire, the wave spring may be holding the bolt too far forward for the spacer/spring you have installed in the powertube. Try a shorter powertube spacer.
    Except for the Automag in front, its usually the man behind the equipment that counts.

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