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Thread: KNS pins

  1. #21
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    I have seen M16's with egged pin holes. I will say these receivers had thousands upon thousands of rounds through them and were probably close to the end of their life expectancy. In any case, with the gov't paying a couple hundred dollars or whatever it is for an M16 lower, it may just not make sense. For a Colt M16 in the NFR owned by an individual, that makes a difference because of the value of the receiver. They can be repaired, but who wants to go through that crap if you can avoid the problem all together. With the improvements with the Gen2 stuff, it may be a worthwhile investment. You have to consider though, will you ever shoot enough to realize the benefit?

  2. #22
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    I'll bet the government gets their M16/M4 lowers for under $100

    It makes sense to take preemptive measures with something as valuable as a transferable M16 lower.

    I personally think the non-rotating pin is a beneficial improvement be it used on 9mm F/A or semi 5.56. The design is still evolving and I don't think it's fair to throw out the whole idea because of a few problems. I have them on my 5.56 and I admit, I like the way they look. I also like knowing that they will not ever walk out. If they break, so be it. Its only a BM lower anyway

    Quote Originally Posted by Coleslaw View Post
    I have seen M16's with egged pin holes. I will say these receivers had thousands upon thousands of rounds through them and were probably close to the end of their life expectancy. In any case, with the gov't paying a couple hundred dollars or whatever it is for an M16 lower, it may just not make sense. For a Colt M16 in the NFR owned by an individual, that makes a difference because of the value of the receiver. They can be repaired, but who wants to go through that crap if you can avoid the problem all together. With the improvements with the Gen2 stuff, it may be a worthwhile investment. You have to consider though, will you ever shoot enough to realize the benefit?

  3. #23
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    In all of my years I have yet to see "egged out" lower holes from pins. What I have seen are morons who have beat on them and pounded them in, incorrectly and other silly non sense.



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  4. #24
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    I didn't mean to imply the pin holes were grossly deformed, only slightly misshapen. I also didn't meant to imply I 100% sure this was due soley to use. Could poor maintainance practices and/or ignorance be a contributing factor? Sure. I do know I have experienced pins walking a bit due to what I attributed to the out of round shape of the pin hole.

  5. #25
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    This is only slightly off the topic here, but has anyone ever removed the j-hook spring from the hammer when using KNS pins? It serves no purpose with these pins and removal would get rid of some friction. Without the groove for the spring to fit in, I would think there might be considerable tension exerted.

  6. #26
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    so let me get this straight, if I have a lower that has the hammer pin rotating as the trigger is pulled, these KNS pins are a "MUST" or not?

    My dept has some hand me down guns (from the government) that are full auto and they have this rotating hammer pin issue, is this something that needs fixed or not?

  7. #27
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    It's not something that really needs "fixed" Iraqgunz knows his stuff and if he hasn't seen an "egged out" hole from rotating pins, I believe it.

    It really comes down to if your dept. wants to spend $32 on each rifle. If the holes end up wearing, oversized pins are available.

    Quote Originally Posted by Eagle1* View Post
    so let me get this straight, if I have a lower that has the hammer pin rotating as the trigger is pulled, these KNS pins are a "MUST" or not?

    My dept has some hand me down guns (from the government) that are full auto and they have this rotating hammer pin issue, is this something that needs fixed or not?
    B.A.S. Mechanical Engineering Technology

  8. #28
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    Quote Originally Posted by Eagle1* View Post
    they have this rotating hammer pin issue, is this something that needs fixed or not?
    No.
    The only reason I'd buy the pins is if you're running a 9mm AR and want a stronger hammer pin.

  9. #29
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    I think you might also consider what trigger you are using as most custom triggers come with their own pins. It is my understanding that the custom trigger's pins are semi-proprietary in that you might be able to use the existing pins with them, but they will work work better with the supplied pins. Which means why reduce the function of say a Geissele SSA trigger by using KNS pins in it

    Iraqigunz has seen more full auto ARs in every configuration imaginable than most of us will in a lifetime and if he has not seen an egged out pin hole, well, you be the judge
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  10. #30
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    Quote Originally Posted by Eagle1* View Post
    so let me get this straight, if I have a lower that has the hammer pin rotating as the trigger is pulled, these KNS pins are a "MUST" or not?
    Must NOT.

    Rotating pins is the engineered design.

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