Williams Gun Sight is proud to offer the Fire Sight line of replaceable Guns Sights. Fire sights are designed around fiber optic nodes which gather ambient light to enhance the sight picture. After installing these on your gun you will immediately notice that your ability to acquire the target will be much faster over stock sights. All sets feature a bright red, fiber optic, front sight and fully adjustable peep or U-notch, rear sight. U-notch, rear sight sets use the highly accurate, 3-dot pattern with two green, fiber optic dots at the rear for sharp contrast and quick sight acquisition in all light conditions. No drilling or tapping required for most gun models. Dovetailed front and rear sights may require minor fitting. Dovetail replaces factory front and rear sights. Rear sight is screw adjustable for elevation and drift adjustable for windage; has two, green, fiber optic dots. Front has red, fiber optic rod.