The XS Lever Rail Ghost Ring WS upgrades Marlin Rifles to allow for an optic mounting in multiple positions and adds rugged all-steel backup iron sights. Lightweight, anodized aluminum rail is machined to Picatinny specs and allows scope mounting directly over the receiver or forward for scout scopes or red dot sights. XS Ghost Ring WS is fully adjustable for windage and elevation and comes with two apertures, .230" and .191" inside diameter, for different lighting conditions. The large Ghost Ring affords a great field of view for fast target acquisition. The XS White Stripe (WS) front sight replaces the existing blade and ramp and features a blued steel body with a painted white stripe face. The white on black front post is highly visible in all lighting conditions and provides contrast against any color background. Due to moving the rear sight from the barrel to the receiver, some zeroing issues might arise. Alternate front sight heights are available. Installation requires the removal of factory rear sight. All screws torque to 20 INCH-pounds; over-torquing can fracture or break screws.Does not fit Marlins with octagon barrel.