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1/16/2020 9:48:49 PM
Posted: 10/11/2007 11:54:27 AM EST
I am thinking about installing the KNS anti-rotation pins on my AR's. My question is are they really necessary? Is there really enough spin on the hammer and trigger pins during use to cause the holes to wear and pins to "walk" over time? One of my AR's has a standard trigger and the other has a RRA 2-stage?
Link Posted: 10/11/2007 11:56:59 AM EST
Link Posted: 10/11/2007 12:07:09 PM EST
if you install your hammer spring correctly you should't really need them but I do haven them on my rifles simply cause I like the look they give my receiver
Link Posted: 10/11/2007 12:08:32 PM EST
I use them with CMC Triggers. Otherwise they aren't necessary.
Link Posted: 10/11/2007 12:08:37 PM EST
I have them on a preban lower. If it wasn't a preban I probably wouldn't have them.
Link Posted: 10/11/2007 12:08:46 PM EST
[Last Edit: 10/11/2007 12:09:35 PM EST by Aggie_Gunner]
I haven't seen a necessity for them, and I've shot many a round and worked on scores of rifles and carbines... and the US armed forces don't use them as standard issue to my knowledge (on M-16s and M4s).

I often hear them described here as the most "over the top," have to be tacticool, accessory.

To me it wouldn't be rolling of the pins that would widen the receiver holes, more a constant vibration/ beating by the pins, and I don't think KNS pins would help that.

YMMV,

- AG
Link Posted: 10/11/2007 12:09:00 PM EST
I use them on one because the lower is not replaceable.
Link Posted: 10/11/2007 12:14:34 PM EST
Probably not. But damn they are nice and the hammer and trigger travel is so damn smooth with them. I will never own a lower without them.
Link Posted: 10/11/2007 12:24:32 PM EST
Semi Auto? Probably not.

But, the CDI factor is high. So I will never roll with out them.

Link Posted: 10/11/2007 12:26:36 PM EST
a couple squards of ducttape over the ends of each pin accomplish the same thing without divirting ammo money to fancy new pins.

-patry
Link Posted: 10/11/2007 12:35:46 PM EST
Not if you got a Timney ;)
Link Posted: 10/11/2007 1:03:44 PM EST
I got laid once because I had them installed.

But for the money, it's cheap insurance like someone stated above. Same logic applies to things like winter trigger guards and titanium firing pins.
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