Re: This one is MINE
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Ol Rob</div><div class="ubbcode-body">It has USO medium 35mm rings. They are very well built. They are windage adjustable, which is nice to keep your optic centered, but a pain if you want to remove the scope. I will have to remember to only loose one side. I don't know if they will hold zero that way. I suppose they should unless the opposit side is moved. Thanks for the nice comment.
Rob </div></div>
Nice! My experience with windage adjustable rings is that they will keep a zero on paper at 100 yards, maybe within 4 inches if you're careful, but they are not a swappable item.
As much as a P-rail is claimed to hold a zero on and off, the best I have ever seen is that it goes back on within 2 MOA, same idea here.