Fits older S&W Revolvers with upper side-plate screw*

Also can be installed on newer S&W and other revolvers after drilling and tapping one hole

·        Gives a much improved sight picture over grooved receiver top

·        Adjustment range extremely useful to today’s loads

·        Fast installation

·        Includes medium and large mounting plates - also fits small frame revolvers

·        No alteration to original S&W revolvers (and imitations) with upper side-plate screw*