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Posted: 5/15/2008 11:55:12 PM EST
I'm purchasing parts for my SBR build and just noticed a choice in size when I was about to order a set of KNS pins. (Yes, I know some people think they are a waste of money, but alot of time and paperwork went into this receiver, so $30 is cheap if it works)

I have a choice of...




I imagine the last/largest is for COLT lowers, but what's the difference between the first two?
Link Posted: 5/16/2008 12:03:19 AM EST
[Last Edit: 5/16/2008 12:03:39 AM EST by osprey21]
0.154 pins are standard.

0.155 pins are to tighten up worn receiver holes.
Link Posted: 6/4/2008 9:17:54 AM EST
The 0.155 pins will work in new receivers. That is what was recommended to me by KNS for my new RRA.
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