Pennsylvania Firearm Owners Association
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  1. #1
    Join Date
    Feb 2013
    Location
    Upper Darby, Pennsylvania
    (Delaware County)
    Age
    52
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    Question Series 80 sticking?

    Not a smithing question per se, so I'm asking here.

    Background - for those who don't know, at the end of a stage at a match, part of "Unload and show Clear" for semi-autos is to pull the trigger on an empty chamber (a.k.a. dry fire). My trigger is crisp and light (3#), so it doesn't take but a tap on the trigger face. My problem is this:

    The Series 80 plunger is pressed enough to release the firing pin for the hammer strike, but I'm off the trigger before the firing pin can reset, leaving it locked forward, projecting over " from the bolt face, which interferes with the next loading process.

    If instead I pull and hold the trigger I can feel a hesitation between the hammer strike and the firing pin returning home, less time than the gun cycling when shot, but noticeable (to me). As long as I remember to do this each time I'm fine, but pobody's nerfect, so I'd like to fix it mechanically.

    Any ideas what the hangup might be, and do any solutions come to mind? I bought it used and I've got nearly 15,000 rounds thru it on the original firing pin spring, so that's one avenue I could investigate.

  2. #2
    Join Date
    May 2012
    Location
    Pittsburgh-South Hills, Pennsylvania
    (Allegheny County)
    Posts
    37
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    Default Re: Series 80 sticking?

    Just hold the trigger down. When showing clear, you aren't prepping for a follow up shot so just plan "to show clear, press trigger, click, and hold." You don't need to modify a gun for a minor training issue.

  3. #3
    Join Date
    Jul 2013
    Location
    Mohnton, Pennsylvania
    (Berks County)
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    Default Re: Series 80 sticking?

    Clean the firing pin, hole and spring. Replace the spring if weak, remove any burrs if present.
    The Gun is the Badge of a Free Man

  4. #4
    Join Date
    Dec 2010
    Location
    Erie, Pennsylvania
    (Erie County)
    Posts
    5,869
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    Default Re: Series 80 sticking?

    Quote Originally Posted by cdi View Post
    A drop leg holster? A big clue indicating an Operator operating operationally, of course.

  5. #5
    Join Date
    Feb 2013
    Location
    Upper Darby, Pennsylvania
    (Delaware County)
    Age
    52
    Posts
    3,331
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    Default Re: Series 80 sticking?

    Quote Originally Posted by Gun View Post
    Good read, thanks.

    I have an extra power firing pin spring coming this week.

    Will report after the weekend.

  6. #6
    Join Date
    Feb 2013
    Location
    Upper Darby, Pennsylvania
    (Delaware County)
    Age
    52
    Posts
    3,331
    Rep Power
    21474845

    Default Re: Series 80 sticking?

    Quote Originally Posted by Sgt.K View Post
    Good read, thanks.

    I have an extra power firing pin spring coming this week.

    Will report after the weekend.
    New spring almost 1/2" longer than old spring. I seems like the firing pin was able to project into the empty chamber far enough that the taper on the pin engaged the hole in the bolt face, and it took a moment for the spring to bring it back. Doesn't seem to be a problem now.

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