The Marble Arms 45-MR Fiber Optic Front Sight features a .450" height design with green fiber optic technology for enhanced target acquisition and accuracy.Marble Arms 45-MR Front Sight.450" sight height for optimal alignmentFiber optic glow technology with green fiberDurable steel constructionDesigned for rifle applicationsThis precision front sight provides improved visibility and faster target acquisition for rifle shooting making it ideal for hunting target shooting and tactical applications.