Leupold FX-II Scout 2.5x28mm Duplex 1/4-MOA field-click adjustments for windage and elevation Durable and compact, the one-inch maintube is lightweight and fits more legacy rings Made with Leupold's Proprietary nitrogen sealing process, which has become the industry standard Complete waterproof and fogproof integrity  each is ready for a lifetime in the field, in all conditions