AR-15 'Anti Rotation Pins'

This is a discussion on AR-15 'Anti Rotation Pins' within the Defensive Rifles & Shotgun Discussion forums, part of the Related Topics category; So my buddy says I should get KNS Antirotation pins for my Stag AR (model 2). I have the OEM trigger, and thinking about a ...

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    Member Array AR15VSCoyote's Avatar
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    AR-15 'Anti Rotation Pins'

    So my buddy says I should get KNS Antirotation pins for my Stag AR (model 2).

    I have the OEM trigger, and thinking about a Spikes battle trigger as an upgrade....?

    My OEM is fine for smokin' Wiley Coyote....

    What are your thoughts about these upgrades?

    Thanks!

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    The anti rotation pins are a solution looking for a problem. I never could see a reason for them. If your lower is of such poor quality that holes are going to oval on you then you will have much worse problems to deal with.

    Can't speak to the trigger. I just run GI/standard FCG(G&R Tactical in one and PSA in the others) in my ARs. But I'm not varminting at 500 yds either
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    Member Array Cbuffett556's Avatar
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    None of my ARs have them.

    If your pins are walking you've got bigger problems
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    Thanks, Kinda thought so myself....

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    JMB
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    Not needed

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    One of those things internet mall ninjas tell you that you need but considering it hasn't been a problem for the half-century the military has been using the M16 I don't think it'll be a problem for your varmint gun. If it is, your receiver and/or pins are faulty and should be replaced.
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    As useful as an Accuwedge.
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    As useful as teets on a boar.
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    Senior Member Array Fausty's Avatar
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    I run the 1/4 28 set screw trick on my PSA trigger. I also had to polish the heck out of the lock up surfaces to make it smooth. Match trigger for $.50. pull is around 4.5 lbs. with almost no travel.
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    Senior Member Array munch520's Avatar
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    Quote Originally Posted by luvmy40 View Post
    The anti rotation pins are a solution looking for a problem. I never could see a reason for them. If your lower is of such poor quality that holes are going to oval on you then you will have much worse problems to deal with.

    Can't speak to the trigger. I just run GI/standard FCG(G&R Tactical in one and PSA in the others) in my ARs. But I'm not varminting at 500 yds either
    Amen fellow Ohioan!

    Unless full auto, I see no point. It's an added expense and more crap on the gun.

    Quote Originally Posted by Fausty View Post
    I run the 1/4 28 set screw trick on my PSA trigger. I also had to polish the heck out of the lock up surfaces to make it smooth. Match trigger for $.50. pull is around 4.5 lbs. with almost no travel.
    Shooting will also polish the trigger...work out the surfaces until smooth
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    I know real world guys who swear by them. When I asked them why they said this:

    1. They keep the holes from wallowing out.

    2. They maintain the exact geometry from "center to center" on the pins which helps the trigger pull and minimizes wear on sear/hammer points.

    3. They keep the pins from walking.

    Bottom Line: On work guns (especially full auto) they get shot A LOT and cleaned A LOT. It's cheap insurance.
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    JMB
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    Quote Originally Posted by DRM View Post


    I know real world guys who swear by them. When I asked them why they said this:

    1. They keep the holes from wallowing out.

    2. They maintain the exact geometry from "center to center" on the pins which helps the trigger pull and minimizes wear on sear/hammer points.

    3. They keep the pins from walking.

    Bottom Line: On work guns (especially full auto) they get shot A LOT and cleaned A LOT. It's cheap insurance.
    "Real World Guys"? What does that mean / who? I've worked on guns that got shot a lot and cleaned a lot and never saw this problem...but I'm always willing to listen.

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    SEAL Team guys...

    When they speak I listen.

    From an engineering standpoint, it makes total sense. And with the Geissele trigger it's a perfect match.
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    Senior Member Array munch520's Avatar
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    I would guess they shoot full auto a lot more than we do? I can definitely understand the aforementioned issues during prolonged use/full auto fire.
    Monotony is the awful reward for the careful

    How can man die better than facing fearful odds, for the ashes of his fathers and the temples of his Gods?

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    JMB
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    Quote Originally Posted by DRM View Post
    SEAL Team guys...

    When they speak I listen.

    From an engineering standpoint, it makes total sense. And with the Geissele trigger it's a perfect match.
    With all due respect to those fine guys, I still say not needed...based on my own experience of course.

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