I don't know why, but when it comes to ordering parts I just hate to pay outrageous Shipping and Handling charges. So that is what brought this on. I wanted to move my group up 1". So after figuring out how much higher my rear sight had to be. Sight radius 5" x 1" high, divided by 7 yards (252") = 0.0198" So after much thought I decided to modify my rear sight. So this is what I came up with. It just so happens my old NRA card is plastic and .020 thick. After blacking out the white dots with flat black touch up paint. I cut the a piece of the NRA card and glued it into the bottom of the notch of the rear sight.
Sorry the picture isn't so clear.