Not yet but I hope to soon... I have to work this weekend but I have some of these screws to try... As long as the fit is tight I am confident they should hold.

Now, I will be pulling my barrel as one hole drilled too deep and messing up a barrel is too many... and I have never done that yet! It takes 2-minutes to pull a barrel so why risk it.

I agree. As long as the pin problem does not create to much trouble.

three so far , working on a polish onyx right now that I plan to fire a 75 round drum out of this kill all the naysaing

That should help. My worry was when I used them to put some angle togetheras a test. It seemed like they loosened up to easy and might come apart. I was all excited about it before then.

use red loc-tite on them