KNS Anti Rotation Pins....Is it a fluke or is there something technical behind it.

[Leaveammoforme]

Both my hammer and trigger pins on my 7.62 DPMS just "rock" with the movement...neither really "rotate".
Whereas the hammer pin on my Bushmaster (Windham) rotates about 10* each hammer stroke. And the trigger pin doesn't move at all it seems.

essayons

Your Windham should have an FA bolt. Therefore, 1 step higher than a bushmaster. Not quite a 100% gun but definitely a step up from old school BM's.

[soldier_twiggy]

Your Windham should have an FA bolt. Therefore, 1 step higher than a bushmaster. Not quite a 100% gun but definitely a step up from old school BM's.

It is an old school Bushmaster. It came with a SA BC, but I've since converted it to a CMMG piston, which swaps to a FA one piece carrier.

essayons

[MistWolf]

Took a look at my carbine. It is a PSA lower with the SSA trigger installed. Pins rotate with both the hammer & trigger. Whaddya know 'bout dat?

[markm]

Don't mess with nature.

[soldier_twiggy]

Don't mess with nature.

AR15, the true king of the jungle?

essayons

[BTL BRN]

When Bill Geissele speaks, I tend to listen. If he thinks the KNS pins are a bad idea.... well, that's a good enough reason for me to stay away from them

Agreed, though in fairness I believe I read that KNS is making pins (upcoming) that will be properly hardened for use with G triggers.

[Obscenejesster]

Agreed, though in fairness I believe I read that KNS is making pins (upcoming) that will be properly hardened for use with G triggers.

I don't believe it has anything to do with pin hardening. KNS already hardened their pins some time ago.

It is because the KNS pins are slightly smaller than the G pins. The biggest conflict comes when using the KNS pins with the High Speed Trigger due to the C-Clamp.

[Leaveammoforme]

*stumble* *drop my briefcase containing TOS literature*

4/16/2009 11:47:53 AM
just oil them as you would any other std. pins.


Really, markm is the man to ask about this. He's a KNS god.

[JusticeM4]

It's just a .22, but I've got an M&P15-22 (polymer lower) that occasionally stops functioning when one of the hammer/trigger pins walks out and the FCG gets bound up. KNS pins are a cheap, easy fix for that issue. I wouldn't expect that kind of thing to happen on an in-spec metal lower. To me it is a possible solution when there is a known problem, but not something I'd do preemptively.

That's similar to my thoughts regarding these pins. They are not necessary unless you have a specific need for them or your lower starts having issues.

If they were truly necessary, you'd see all the Military M4's/M16's with them from the factory. I've never seen one that does...

[Skyyr]

If they were truly necessary, you'd see all the Military M4's/M16's with them from the factory. I've never seen one that does...

Not true. At ~1,000,000 trigger pulls before wearing out (probably a low estimate), it'd be easier to simply replace a lower receiver for $100-200 than it is to absorb the extra $5, $10, $20 - whatever it is - cost per every carbine the military buys. Most of them don't see that many rounds in their lifetime and would not be close to wearing out, so it's a saved cost.

The military does not always do things the best way, they simply attempt to do them the way that's most effective with how they currently operate.