Bushy tension pins for receivers

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[ARCHIVED THREAD] - Bushy tension pins for receivers

Posted: 4/16/2007 6:49:13 PM EDT

Do these work? Any drawbacks other than requiring a tool?
I remember seeing the Colt Match HBAR having some sort of "screws" in place of push pins and want something like that to tighten things up.
www.bushmaster.com/shopping/gunsmith/artp.asp

Posted: 4/17/2007 7:21:35 PM EDT

[#1]

Fastest way to ruin the pin holes in your receivers.

Posted: 4/18/2007 4:41:06 PM EDT

[#2]

This is the same thing that JP has been using on their upper end rifles for the last 4 yrs, maybe longer. It wont ruin your pin holes either. I dont know what JP charges for theirs but I would use it before the accuwedge. This device does remove all play between the upper and lower, in the rear at least. The only down side is you have to use 2 allen wrenches to install and remove the pin.

Posted: 4/18/2007 5:36:27 PM EDT

[#3]

Quoted:
This is the same thing that JP has been using on their upper end rifles for the last 4 yrs, maybe longer. It wont ruin your pin holes either. I dont know what JP charges for theirs but I would use it before the accuwedge. This device does remove all play between the upper and lower, in the rear at least. The only down side is you have to use 2 allen wrenches to install and remove the pin.

Yes it does open up your rear takedown holes. Every one of these that I've pulled from a gun have their retakedown pin hole opened up 0.005" oversize which is five times greater than the allowable tolerance for the takedown pin holes.

Posted: 4/18/2007 8:57:09 PM EDT

[#4]

I was under the impression that the fit between the upper and lower does not have that great of an affect on accuracy.

Posted: 4/19/2007 8:42:23 AM EDT

[#5]

Quoted:
I was under the impression that the fit between the upper and lower does not have that great of an affect on accuracy.

It doesn't, but people like me will get paranoid with the wiggling.

That being said, the only proper way to fix the wiggle is to find matching upper/lower. None of this "fix" is a real fix on the long run.

[ARCHIVED THREAD] - Bushy tension pins for receivers

AR-15 » Rifles, Uppers, Lowers, Barrels, and more

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