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Thread: Non-Rotating Trigger and Hammer Pins

  1. #11
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    Ring,
    If you don't mind me asking, what type of lower are you using and who's parts kit. I've only seen this happen on one rifle before. The lower was a CD and the parts kit was from Colt. The pins would actually slip when the lower was turned on its side without the hammer or trigger installed.

  2. #12
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    Last time I checked (and I have one in the safe) CD lowers use .155 pins. Colt pins only come in .155 or .170. Sounds to me like the lower must have been out spec. Assuming that someone didn't monkey **** the lower.

    Quote Originally Posted by pah151 View Post
    Ring,
    If you don't mind me asking, what type of lower are you using and who's parts kit. I've only seen this happen on one rifle before. The lower was a CD and the parts kit was from Colt. The pins would actually slip when the lower was turned on its side without the hammer or trigger installed.



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  3. #13
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    Quote Originally Posted by pah151 View Post
    Ring,
    If you don't mind me asking, what type of lower are you using and who's parts kit. I've only seen this happen on one rifle before. The lower was a CD and the parts kit was from Colt. The pins would actually slip when the lower was turned on its side without the hammer or trigger installed.
    i can go mic the pins, but the pins are from Sherluk, the trigger/hammer is a armtlite 2 stage, same as rock river

    the lower is http://www.superiorarms.com/products_main.php?pid=22

    all but the trigger is new
    Last edited by Ring; 04-02-09 at 10:18.

  4. #14
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    I care.

    My thinking is if the pins can't rotate, they can't walk. I don't leave an issue pending to fix down the road on purpose.

    I don't want to ruffle any feathers, just passing on a little thing that worked for me. I guess if no one cared about rotating or walking pins, there would be no sales for anti-walk pins.
    These kits are against the DCM's rules for Service Rifle. Perhaps this could be considered a fix that a different discipline uses.

    Mark15

  5. #15
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    You are missing the point. The pins don't walk because they rotate. They walk because of the following;

    A. The "J" spring in the hammer is worn or missing.

    B. The hammer spring is worn and needs to be replaced.

    C. Someone lacking brain cells has screwed up their lower receiver pin holes.

    D. The pins themselves are out of spec or potentially worn.

    Anti-walk pins are for lazy people who don't want to do proper maintenance in my opinion. I have a few days of experience with the M16 FOW and I have yet to see any large amount of pins "walking".

    Quote Originally Posted by Mark15 View Post
    I care.

    My thinking is if the pins can't rotate, they can't walk. I don't leave an issue pending to fix down the road on purpose.

    I don't want to ruffle any feathers, just passing on a little thing that worked for me. I guess if no one cared about rotating or walking pins, there would be no sales for anti-walk pins.
    These kits are against the DCM's rules for Service Rifle. Perhaps this could be considered a fix that a different discipline uses.

    Mark15



    Owner/Instructor at Semper Paratus Arms

    Facebook: https://www.facebook.com/SemperParatusArms/

    Semper Paratus Arms AR15 Armorer Course http://www.semperparatusarms.com/cou...-registration/

    M4C Misc. Training and Course Announcements- http://www.m4carbine.net/forumdisplay.php?f=141

    Master Armorer/R&D at SIONICS Weapon Systems- http://sionicsweaponsystems.com

  6. #16
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    I've used both but settled down on this KNS model: KNS Pin set because it gives me a tactile reference to place my trigger finger on. YMMV.
    We must not believe the Evil One when he tells us that there is nothing we can do in the face of violence, injustice and sin. - Pope Francis I

  7. #17
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    Quote Originally Posted by Ring View Post
    i can go mic the pins, but the pins are from Sherluk,
    Think I just identified your problem. Sherluk is cheap-ass Chinese made shit.

  8. #18
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    I never had this problem but from a mechanical point of view a rotating steel pin will eventually enlarge the hole in an aluminum receiver , won't it?

  9. #19
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    I tried a set just because I like to tinker with stuff and what I found is that it significantly improves the trigger pull. Not the wieght that it breaks at so much, but it really smooths out the take-up. It does such a good job I put them in all of my ARs. It's worth spending $35 to improve the trigger pull. YMMV.

  10. #20
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    Quote Originally Posted by Iraqgunz View Post
    You are missing the point. The pins don't walk because they rotate. They walk because of the following;

    A. The "J" spring in the hammer is worn or missing.

    B. The hammer spring is worn and needs to be replaced.

    C. Someone lacking brain cells has screwed up their lower receiver pin holes.

    D. The pins themselves are out of spec or potentially worn.

    Anti-walk pins are for lazy people who don't want to do proper maintenance in my opinion. I have a few days of experience with the M16 FOW and I have yet to see any large amount of pins "walking".
    Damn well said.

    Being a company armorer in a line unit in the 101st we had a LOT of M4s with "heavy use" and I saw exactly 1 that had a problem with the pins walking. The solution was after ensuring the receiver holes were still true I replaced the FCG and it's associated pins. Problem solved.

    Also who in the F is Sherluk??

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