Bright visibility and sight plane reference includes interchangeable colors and sizes to fit your shotgun rib. This HIVIZ sight can turn your shooting around adding visibility and a better point of reference to your sight plane. Attaches magnetically to your shotgun's rib in seconds. Mounts easily with no gunsmithing required on any Browning shotguns with vent ribs. Includes four interchangeable LitePipes of different diameters to match different lighting conditions. Round and Triangular LitePipe Shapes. Front Sight Width: 0.375". Front Sight Height: 0.375".