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Thread: KNS pins to long?

  1. #11
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    I have them, now sitting in one of my unused parts boxes.

    To answer your question... I believe mine came with destructions on filing the ends down to fight tightly.

    To agree with everyone else. They are not needed and that is why this setup is sitting in a parts box and not on any of my rifles. You'll run them for a while and then decide to take it off, probably.

    Anyway, hope this was informative in your quest for knowledge of fitting these "Anti Rotation" pins, and in letting you know that you wasted money. Bet hey, they do look cool.

    Live and learn brother.

    __________________________________

    556mp

  2. #12
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    here we go again.....

    I have them and like them, for whatever reason I didn't have to file mine, but I did have to file a set of JP pins just a little.
    Last edited by motorwerks; 07-29-10 at 01:43.

  3. #13
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    heres something fun I just found in a sticky......

    If it couldn't happen then why was this tool ever built in the first place?
    Keep in mind I am not being a jackass simply asking a question.


    The first inspection being shown is the checking of the holes for the hammer and trigger pins in the lower receiver. You insert the gage and then rotate it to see if the gage penetrates in any position. If not then you are a GO.



    this is from here BTW....
    https://www.m4carbine.net/showthread.php?t=58344

    Just as a thought, but if it couldn't happen they wouldn't make the gauge.

  4. #14
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    The tool was designed to check the holes. As I clearly stated before the MOST COMMON cause of the holes wearing out are from people who incorrectly disassemble an assemble their lower as well as use the wrong tools. Go to a Colt or other AR armorer course and you will see what I mean. People beating on the pins with steel punches. Could a rotating pin cause it, I suppose anything is possible.

    Totally unnecessary and will usually result in some damage.

    I know that you want to believe that you made the best purchase since peanut butter and sliced bread, but as I and others have stated before there are numerous M16's in service that are decades old.

    Go look in the Retro AR thread of the 1960's-ish AR that was pulled out of mothballs and lent to a police dept. under the 1033 program.

    I saw M16's in Iraq that were made by the Hydro-Matic Div. of GM (late 1960's- early 70's.) restamped and then had M4 uppers dropped on them. They were running just fine.

    Quote Originally Posted by motorwerks View Post
    heres something fun I just found in a sticky......

    If it couldn't happen then why was this tool ever built in the first place?
    Keep in mind I am not being a jackass simply asking a question.




    this is from here BTW....
    https://www.m4carbine.net/showthread.php?t=58344

    Just as a thought, but if it couldn't happen they wouldn't make the gauge.
    Last edited by Iraqgunz; 07-29-10 at 04:16.



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  5. #15
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    I doubt the M16 that was just issued to you in Veitnam had that high of a round count, being that they were just being feilded.

    Along the same lines, just because a gun is old that is by no means an indication of round count or pin hole wear. I'm sure there were M16s from the 60s that went to stateside units and sat in a rack.

    That being said, the reviews i've read about the KNS pins had more to do with trigger pull and changing the feel of it more than wear.

  6. #16
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    KNS pins are useful on a 9mm AR, especially a FA gun. The 9mm's are known to violently cock the hammer. Hammer pins are known to break because of this and often the broken pin goes undetected egging out the pin hole, again especially in a FA. Ramping the 9mm bolt will also help with this.

    Some see the pins as peace of mind that their pin will not break even though they only shoot .223 in their full auto or semi-auto SBR.

    They are not junk.

  7. #17
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    i wouldn't consider them completely useless. i'm not concerned with rotation, egg-shaped holes, or walking pins from incorrectly assembled standard fire control groups.

    what i do use them for is with aftermarket drop-in trigger modules, namely the mcormick and timney, which do not use springs to retain the pins. the mccormick comes with pins with tiny c-clips, which i don't really like (i've lost and damaged them before - the KNS are easier for me to disassemble/reassemble). the timney relies on tension to retain the standard pins, provided by tightening two set screws that bear into the bottom of the receiver, pushing the whole module up. i've had the timney loosen up before, so the KNS pins ensure that i don't lose a pin. other than this particular application, i have never needed them for a standard fire control group.

  8. #18
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    Quote Originally Posted by bp7178 View Post
    I doubt the M16 that was just issued to you in Veitnam had that high of a round count, being that they were just being feilded. ...
    You misread his post. He did not say he was in Viet Nam. He wrote the gun he was issued was a Viet Nam era M-16 A1 and it probably saw service in Viet Nam, probably before he was born.

  9. #19
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    Quote Originally Posted by militarymoron View Post
    i wouldn't consider them completely useless. ...

    what i do use them for is with aftermarket drop-in trigger modules, ...
    So you choose to use useless products? How can you consider them useless if you choose to use them, and see a need for them, in a particular application?

  10. #20
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    Quote Originally Posted by az doug View Post
    So you choose to use useless products? How can you consider them useless if you choose to use them, and see a need for them, in a particular application?
    did you misread what i wrote?

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