Another HK VP9 Trigger Bar Spring Failure - Page 2
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Thread: Another HK VP9 Trigger Bar Spring Failure

  1. #11
    Merchant of Death (Admin)
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    There is a little "button" that serves as interface between the spring and the trigger bar. The particular adhesive used in the button has been upgraded a few times. Give HK CS a call and see what happens.
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  2. #12
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    Quote Originally Posted by javemtr View Post
    Any idea what modifications HK made to this part to improve it?
    That spring attaches to the bar with a plastic plug at the end. The fact that the spring does not have the plug demonstrates the adhesive failed. A white plug indicates the most recent version.

    edit: just noticed Jeff beat me to this. A little knowledge is a dangerous thing.

    Another HK VP9 Trigger Bar Spring Failure-4098041c-4266-4f1f-accc-e833ee95f844.png
    Last edited by SudS; 09-03-2019 at 11:45 AM.
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  3. #13
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    The plastic clips are in 3 different colors now
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  5. #14
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    Why are the only failures I see regularly on HK pistols always posted on the HK Pro Forums by brand new members? Still, glad I checked this out so I can make sure I have the new version!
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  6. #15
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    Quote Originally Posted by grumpy1 View Post
    So you bought an used HK VP9 with unknown history and you are making a big deal about it like it is an HK QC problem - "add it to the count" ? That is just stupid. Have HK fix it and if they charge you for it just pay it because that is a risk you take when you buy a used gun that the previous owner may have monkeyed with.
    I saw this reported once, on another thread, and somewhere buried in the 25+ pages there was a question as to the frequency of occurrence. I've added this thread to provide future users an additional reference to this issue happening again.

    I didn't feel it prudent to add my experience to a thread that hasn't been added to since 2016.

    Your interpretation that I've implied "the count" to be synonymous with "large number that is completely unacceptable" is just that, an interpretation.

  7. #16
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    Quote Originally Posted by DreadPirateMoyer View Post
    I can't recall where, but I've read that the only way that spring will truly break on a routine occurrence is when someone dicks with it, either through improper disassembly/reassembly or doing something else stupid.

    Since yours is used, I'm willing to bet this is what happened here as well. Whoever had it before you probably did something stupid with that spring, and now unfortunately you're paying the price.
    This is quite possibly the case.

  8. #17
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    Quote Originally Posted by Nick101ABN View Post
    All makes and models of guns can break . Even the famed Glock . Was shooting my 17 Gen4 and the firing pin broke leaving the gun a paperweight.
    Called Glock and they said it’s a wear part and not under warranty.
    Also since you bought it used how do you know that the previous owner wasn’t monkeying around with the internals ?
    The previous owner certainly may have modified it, jarring loose the adhesive. At this point it is an unknown variable for sure.

  9. #18
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    Quote Originally Posted by msaluta View Post
    This is quite possibly the case.
    Since HK is on its third iteration, I’m inclined to believe the tension and movement between the spring and the plastic (nylon?) plug has been underestimated.
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  10. #19
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    Suds... Thanks for the heads-up.
    I am not aware of this rev, I don’t have a VP.
    Curious on if the spring does move/rotate on the cap/retainer, why is it plastic (?).

  11. #20
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    Quote Originally Posted by bystok View Post
    The plastic clips are in 3 different colors now
    ^^^^^
    I have a BG with a black plug and a BH with a white, what is the other color?? I'm also wondering why they would use nylon/plastic on a critical part that
    gets torqued with every trigger pull.......
    "All that is necessary for the triumph of evil is for good men to do nothing"
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