Speaking of the QRW's, the top half of the ring does have to snap over the tube. I have yet to damage any of the scopes finishes and I have 5 sets. I did have my first "failure" yesterday, if you can call it that. I had hunted and bagged a nice female red fox, and a nice Tom turkey. Got home to clean the gun and when I was done, I went to re-install the scope. I was tightening the rear thumb lever when the bolt or screw, whichever you want to call it, sheared off flush with the side of the bottom of the ring. No way to change out the bolt or extract it either. I had to take my back-up Super 91 to the edge of the woods today and fire a total of 7 rounds to have it on perfect zero. I had never shot this gun and just had put the scope on it. Took a nice raccoon this evening with it. But it was a first on the bolt breakage from Leupold. I guess I'll have to see what they will do for me the first of the week.