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 Fire Sight included. Notes:Bottom of the dovetail to the top of the sight measures .343"This model is designed for Marlin lever actions with a front sight ramp FeaturesCompact Low ProfileLightweight, Strong, RustproofPositive Windage and Elevation Locks