Buck65,
On the Renegade above I have to drill and tap on hole. It used the tang screw for one and the other like I said I drilled and tapped.
It was a piece of cake to do, Mine was a Lyman 57 SML rear sight and a 17AML front. The way the Lyman adjusts in elevation you can move the sight and zero it to each distance you want. I have mine so I can select the yardage from 100 to 300 yards. I am sure I can sight this sight in all the way out to 500 yards. Ron