The fully adjustable rear metallic Williams Dovetail FireSight Set 70742 fits all standard 3/8 inch dovetails models. The front steel bead on the Williams FireSight Set replaces existing factory bead. The Williams Dovetail FireSight is made with light gathering fiber optics that are great for most lever action guns with ramped front sights. For a great way to make sure you are shooting with some of the best sights the industry has to offer, choose the Williams Dovetail FireSight Set. Features of Williams Gun Sight 70742 Dovetail FireSight Set: - Fits all standard 3/8 inch dovetails on most dovetail models - Replaces existing factory bead - For most lever action guns with ramped front sights - Light gathering fiber optics 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.