The Williams Fiber Optic Firesight Set is designed around fiber optic nodes which gather ambient light to enhance the sight picture. Firesights do offer a much higher level of visibility and better 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. NOTE - Front and rear firesights replace existing Remington factory rear blade and front bead. - Fits pre 2003 guns - Green Rear/Red Front sight set - CNC Machined Aluminum - Replaces existing Remington factory rear blade and front bead About Williams Williams Gun Sight Company was started in 1926 by Harvey Williams as a sight manufacture. The company grew its sight manufacturing business over the years then developed a retail store and shooting ranges in Davison, Michigan. In recent years, Williams is the oldest sight company that provides sights to many different gun manufactures.