I'm going to cross dovetail a shortened model 10 barrel for the front sight. Some of the sights like Novak have a roll pin that is driven thru the sight blade into a hole drilled thru the slide to secure the sight once its been adjusted for windage. The slide hole goes all the way thru so you can tap it back out from underneath if you ever need to. On a revolver barrel that won't work. Is there any reason the hole in the sight couldn't be tapped for a set screw to help secure the sight, or is it really needed?