Trigger pin walked out on me today

Discussion in 'Black Rifle Forum' started by J-Doo, Jan 12, 2020.

  1. J-Doo

    J-Doo

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    I’ve read a lot of people say anti walk/rotation pins were a waste of money. I’ve bought a few sets but they always got in the way of my Geissele Maritime bolt catches so I didn’t use them. That changed today. I had my 300 BO pistol at the range today and about half way through a 20 round mag I started getting a little hitch on the second stage and it was messing with my shot. I looked and the trigger pin was partially pushed out. The first thing I did when I got home was put some KNS pins I had in it. Has anyone else ever had this happen?
     
  2. Duramaxsky

    Duramaxsky

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    I had it happen on one of mine. They make anti walk pins as well. I used those. They don't have the strap between them. They have a head on one side ansd a small screw on the other side. They can still rotate but wont get in the way.
     

  3. George Kaplan

    George Kaplan emeritus

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  4. J-Doo

    J-Doo

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    It was an Aero M4E1 lower with a LaRue MBT2S trigger. It was probably my installation. This was only the 2nd time to the range for this pistol.
     
  5. AK_Stick

    AK_Stick AAAMAD

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    Seen it several times in classes. All my guns wear KNS puns now.
     
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  6. Big Bird

    Big Bird NRA Life Member

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    Usually caused by an improperly installed hammer when the legs of the hammer spring end up under the trigger pin instead of on top of the pin. The legs of the spring are supposed to sit in the grooves of the trigger pin preventing any lateral movement.
     
  7. syntaxerrorsix

    syntaxerrorsix Anti-Federalist CLM

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    Every time I've seen it it was exactly as BB described. Improper installation.
     
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  8. wct097

    wct097

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    Ditto, though I did use KNS pins on my 9mm as I've read those tend to have issues with rotation and egging of holes due to the blowback action.
     
  9. screwman

    screwman

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    My wife walked out on me about 30 years ago. Thank God and greyhound she’s gone.

    Oh...we’re not taking about the same thing, are we?
     
  10. bubbatime

    bubbatime

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    This..... Post a picture of the trigger pack. Its usually installed improperly. I spend a lot of time on the range and 98% of the time this happens, the hammer spring is installed backwards (easy to do) or not correctly.
     
    Last edited: Jan 24, 2020
  11. J-Doo

    J-Doo

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    Thanks for the advice. I will make sure to double check that in the future.
     
  12. cciman

    cciman

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    Design fault (nature), vs. improper installation.

    Common misunderstanding, keeps KNS in business.
     
  13. dkf

    dkf

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    I had KNS pins in a couple of my rifles but noticed the pull got lightly heavier with more creep and the pins wore quicker than the ALG/Geiselle pins that came with the trigger. So I removed them.
     
  14. AndyK

    AndyK

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    I've used KNS pins for years. They work.
     
  15. faawrenchbndr

    faawrenchbndr CLM

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    I use KNS pins in a few rifles. Mainly to be used as a trigger finger rest
     
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  16. Indy_Tim

    Indy_Tim

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    The only rifle I’ve had an issue with is a .300BO PSA build. It has KNS pins now. This was my first AR build though and truth be told, it could have been that the spring was not installed correctly. None of the follow on builds have had an issue and it’s been a while since the PSA did. If nothing else, the KNS pins give me peace of mind on that rifle.
     
  17. faawrenchbndr

    faawrenchbndr CLM

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    One thought......I have a few of the drop in triggers. They don’t have issues with trigger pins walking.
     
  18. syntaxerrorsix

    syntaxerrorsix Anti-Federalist CLM

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    In a similar vein, I just installed a new trigger group and noticed that the hammer pin moved freely. Pulled the hammer and saw that the J spring wasn't protruding into the opening as it should so there was nothing for the pin to grab.


    I don't think I've ever heard of that problem before.