This high-contrast Williams fire sights fiber optic set is engineered for professionals who require rapid target acquisition in low-light conditions. The set comprises a red fiber optic front sight and a green fiber optic rear sight, which replace the standard factory front bead and rear blade. These sights are specifically designed to fit Remington rifles and muzzleloaders manufactured after 2003. Williams fire sights are manufactured in the USA. The FireSights system is designed to replace the standard Remington factory rear blade and front bead, enhancing both the front and rear sight capabilities The Williams sight features a small-diameter fiber optic rod securely mounted in a durable steel sight base, offering a superior alternative to common plastic bases The red front bead remains highly visible during use, even when positioned against a dark background, ensuring clear sight alignment and target acquisition