Glock litewave interchangeable rear sight. HiViz Glock litewave interchangeable rear sight 9mm, 40 Smith & Wesson and 357 Sig. (Sight height is 6.5 mm). includes Lite pipes and key to change Lite pipes. The new litewave sight design from hiviz 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. Specifications: - manufacturer: Hi-Viz - model: litewave - type: sight - fit: 9mm, 40S&W, 357Sig - description: rear only - accessories: include LitePipes and key - manufacturer part #: GLLW15