HiViz's Litewave interchangeable, front sight includes three LitePipes (red, green white) and a key to interchange the LitePipes. The Litewave sight design features an innovative, diagonal-wave design that increases durability to the protective exoskeleton and allows for more exposed surface area for the LitePipe to gather light from all angles, for the brightest sight available. It has an internal integral locking system machined into the one-piece steel sight base. This model fits all Ruger GP100 revolvers with an adjustable rear sight and spring pin (above muzzle) removable front sight. It does not fit models with cross pinned front sights.