The HIVIZ M-Series Wide Magnetic Shotgun Sight with a Shotgun Rib 21/64 to 7/16 Green Red Litepipes delivers versatile, high-visibility aiming for diverse light conditions, featuring four interchangeable high-intensity LitePipes that let you tailor brightness and color to your environment. The snap-on/off magnetic base comes in four rib-width sizes to fit virtually any rib from 11/64" to 9/16", ensuring quick, tool-free installation and solid retention on the line. The M400 model accommodates ribs from .328" to .437" (21/64" to 7/16"), and is compatible with many popular platforms such as post-1964 Winchester pumps and autoloaders, Mossberg models, Browning Citori target grades (excluding super-wide ribs), and Beretta S682 Comp trap guns, making it a flexible upgrade for a wide range of shotguns. Green and red LitePipes provide distinct visibility options to match ambient lighting, while the S-Series offers a single LitePipe at a more economical price for lighter setups. Crafted in the United States, this sight combines reliable magnetic attachment with durable sights designed to withstand field use, enabling rapid target acquisition on turkey, waterfowl, upland games, and competitive shooting where quick, precise sight alignment matters.