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Thread: Is there a downside to KNS pins?

  1. #21
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    I'm sure they are "OverKill" but I have them in all my rifles because some Industry professionals and highly respected members and moderators of this Forum use them. I guess we're all a bunch of Homos

    The cons are something to consider and field repair is definitly something to think about.
    Tzoid

    Texan raised in " The Peoples Republic of Maryland"

    "RRA- if they came with a blow job I wouldn't take one." - Pat Rogers

  2. #22
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    Quote Originally Posted by jklaughrey View Post
    Don't be a tool. After market whiz bangs and doodlebops add weight and change the manual of arms. Maybe less so in regards to these pins, but they will certainly change the ability of field repair. If something has no real purpose to enhance function or reliability than all you are doing is stroking your ego. Money would be better spent buying Jurgens lotion and stroking something that will put a smile on your face.
    You may be surprised... but I agree with you.

    I remember a thread recently that asked about the most hated rifle additions. I'll bet that one deflated a lot of egos.

    One of the responses in that thread was something like "Guys that ask in a internet forum what should I buy/not buy for my rifle".

    This thread qualifies under that premise. All that I am trying to convey is to make your own decisions. There is plenty of aftermarket junk out there with lots of respected names on it that don't add anything.

    Each individual makes up their mind what that "junk" is.

  3. #23
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    I bought into them as well and unless you are going to be blazing full auto down the range I really don't think they are necessary I will never buy them again. I know POF puts them on and that is one reason why POF is the weight of 3 rifles.
    "If man does his best what else is there?"
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  4. #24
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    I have seen seen pins walk out of semi lowers - even with properly installed FCG pins. And it sucks when they do.

    Further, I've always found the KNS set usually lightens a trigger pull by about a 1/2 pound or so - ntohing major, but it is there.

    It is very likely you will never need them, but then again it IS possible - and they are cheap insurance.

  5. #25
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    I really don't see the need on a lower that is not a transferable machinegun. I use them on my Colt M16 lowers in order to prevent the theoretical risk of hammer/trigger pin wear and "egging out" that can occur on high round count lowers. It is cheap insurance to me.

    But they have to periodically be checked to make sure the small screws holding everything together don't loosen. My second to last range trip I noticed these had loosened after a few fullauto mag dumps. Not exactly confidence inspiring in a defensive rifle.

    I shoot my M16s quite a bit, so for me it is worth having, even with the need to inspect the screws intermittently, if it will protect my lower from wearing/egging out the hammer and trigger pin holes.

    None of my designated utility/defensive rifles have KNS pins.

  6. #26
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    Agreed

    Quote Originally Posted by ursus.peracto View Post
    You may be surprised... but I agree with you.

    I remember a thread recently that asked about the most hated rifle additions. I'll bet that one deflated a lot of egos.

    One of the responses in that thread was something like "Guys that ask in a internet forum what should I buy/not buy for my rifle".

    This thread qualifies under that premise. All that I am trying to convey is to make your own decisions. There is plenty of aftermarket junk out there with lots of respected names on it that don't add anything.

    Each individual makes up their mind what that "junk" is.
    Some things make sense in certain applications, where other times it is nonsense.
    Never judge a man by his success, judge by how he deals with his failures!- L.E.C.

    Some People suck at being Human!- Me

    "To keep you is no gain, to destroy you is no loss."- Khmer Rouge

  7. #27
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    Quote Originally Posted by Eurodriver View Post
    I just bought an M&P15 lower and it came with KNS pins installed. The guy gave me the OEM trigger pins as well.

    I'm just wondering if its worth my time to remove the KNS pins and install the OEM ones. These are the Gen2 Mod2 and with the reading I've done that says these are not prone to breaking.

    I've googled and searched but all I've found is that they are a waste of money and provide no benefit. Nothing that says they will have negative impacts on the weapon.
    Negative impacts -

    If they break you will probably not know it right away, this could cause your lower receiver to egg the holes.

    Replace in the field is more difficult.

    These things ruin more receivers than they help. Guess why they now have Gen2 pins instead of staying with the Gen1s?

    They are a solution looking for a problem.
    Last edited by Renegade; 08-27-11 at 12:34.

  8. #28
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    Quote Originally Posted by Renegade View Post
    Negative impacts -

    If they break you will probably not know it right away, this could cause your lower receiver to egg the holes.

    Replace in the field is more difficult.

    These things ruin more receivers than they help. Guess why they now have Gen2 pins instead of staying with the Gen1s?

    They are a solution looking for a problem.
    Facts to back up your statements would be nice over-wise the response is opinion and hyperbole and add nothing to the debate.

  9. #29
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    Quote Originally Posted by ursus.peracto View Post
    Facts to back up your statements would be nice over-wise the response is opinion and hyperbole and add nothing to the debate.
    I am stating facts.

    I have been a personal eyewitness to these issues occurring on others guns. I have diagnosed and repaired several guns with these problems.

    The problems associated with these pins and why they went to a Gen2 design is common knowledge.

  10. #30
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    Quote Originally Posted by steelonsteel View Post
    I have seen seen pins walk out of semi lowers - even with properly installed FCG pins. And it sucks when they do.
    They IMHO, they were designed for lower quality/poorly manufactured lowers or worn out guns with extremely high round counts, maybe. Pat Rogers "Filthy 14" BCM Middy has probably over 30K+ rounds on it by now, rarely cleaned and no issues with the FCG pins walking. I've never seen it of any of my four 2x 6920, 1 LMT MRP and 1 DD or anyone else I've come across during training with a quality AR. 2 of my 4 ARs have over 10K+ rounds with no issues.
    Last edited by RogerinTPA; 08-27-11 at 13:16.
    For God and the soldier we adore, In time of danger, not before! The danger passed, and all things righted, God is forgotten and the soldier slighted." - Rudyard Kipling

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