Customize your gun with the WILLIAMS Rear Peep Sight with Front Fire Sight [70018]. The rear sight is fully adjustable with no drilling and tapping required. FEATURES: Light Aluminum Alloy Fully adjustable for windage and elevation No gunsmithing required 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.