The XS Sights Ghost Ring Sight Set with White Stripe is designed for screw-on front sight Marlin 336, 1894, and 30AS rifles. It upgrades your firearm with rugged all-steel, fully adjustable backup iron sights, providing exceptional target acquisition and durability. The large ghost ring rear sight features two interchangeable apertures (.230" and .191") for varying light conditions. The blued steel front sight includes a painted white stripe for improved visibility and contrast. This set replaces the factory rear sight and mounts with a secure 20 inch-pound torque. Not compatible with new Ruger-made Marlins with 1.00" screw spacing, but works perfectly on CLASSIC 336/1894 models.