An economical set that includes the compact low profile Williams Guide Receiver Sight and the appropriate height front sight. The Guide Receiver Sight features simple, positive screw-lock windage and elevation adjustments. In most cases, the sight utilizes the existing scope mounting screw holes or dovetail on top of the receiver for installation. Red fiber optic Fire Sight included. Front Sight Height .485". Designed to fit the Optima, Optima Pro, Kodiak, Kodiak Pro, and Wolf.