I had a bubba'ed No.4 which I have since sold, but with a drill, a dremel, and a tap and countersink, I made a permanent mount that worked like a charm. I took a piece of 1-1/2" x 1-1/2" angle iron about 5-1/2" long, cleaned it up with a file and fine sandpaper, cold blued it, and used it as the base for my scope rail. The only fun part was fitting it go around the ejector screw head on the side of the receiver. I drilled and tapped 5 holes for 3/32" machine screws, 3 into the side of the receiver, and 2 into the charger guide. I laid my rail on to top, and tapped it into the angle iron, mounted my scope, bore sighted it, and I was off to the races. That mount was stable as could be. I don't know how handy you are, or aren't, but there's by 2 cents worth. Lots of luck with whatever you decide.