XS Sight Systems Marlin 336/Ruger 336 Lever Rail & Ghost Ring Black. Fits Marlin 336 with round barrel and existing front sight blade and ramp that is screwed onto the barrel. 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 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. White on black front post is highly visible in all lighting conditions as well as 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 and covered under XS' No Questions Asked Warranty. Installation requires removal of factory rear sight. All screws torque to 20 INCH-pounds; over-torquing can fracture or break screws. Specifications for XS Sight Systems Marlin 336/Ruger 336 Lever Rail & Ghost Ring: Manufacturer: XS Sight Systems Color: Black Finish: Anodized Fabric/Material: Aluminum Gun Make: Marlin Ruger Gun Model: Ruger Model 336 Marlin Model 336 Gun Type: Rifle Length: 11.25 in Width: 0.838 in Depth/Thickness: 0.105 in Features of XS Sight Systems Marlin 336/Ruger 336 Lever Rail & Ghost Ring Fits front sights with 1.00'' or .700'' hole spacing Steel sight with blued finish Anodized Aluminum rail Snag-free design Limited Lifetime Warranty Package Contents: XS Sight Systems Marlin 336/Ruger 336 Lever Rail & Ghost Ring XS Sight Systems ML-1008-5: Marlin 336/Ruger 336 Lever Rail & Ghost Ring Black