Marble Arms has engineered a series of uni-ramp front sights compatible with all rifles, shotguns and muzzleloaders that utilize screw-mounted front sights. Certain firearms may require the drilling and tapping of a new mounting hole. The fiber optic cables, known for their brilliant glow, are securely installed and permanently flared to the sight. Both ends of the optic cable undergo meticulous polishing to optimize light transmission and are specially shielded against UV damage from prolonged sunlight exposure. Each sight is precision CNC machined from solid steel to meet our stringent standards. These high-quality sights are machined, polished and blued to seamlessly integrate with your firearm.