The fully adjustable rear metallic Firesights are compatible with all standard 3/8 inches dovetail mounts. The front Firesight fiber optic is designed to replace the existing factory bead. These components are suitable for most Winchester and Marlin lever-action rifles equipped with ramped front sights, as well as all Ruger 10/22 models. Installation does not require gunsmithing. The dovetailed design of the windage and elevation components allows for straightforward and precise adjustments, enhancing accuracy and ease of use