Customize your 10/22 with front and rear fiber optic FireSights. The front steel sight and the fully adjustable metallic rear sight are CNC machined for a perfect fit. No more hammer and punch required to adjust the rear sight. No gunsmithing The Williams sight uses a small diameter fiber optic rod held in a steel sight base, as opposed to the many plastic bases on the market. In use, the red front bead is very visible, even against a dark background.