Nikon Buckmaster 6-18x40mm Scope SF Matte (Fine Crosshair with Dot) Durable, versatile riflescope is the result of collaboration between Nikon and Buckmasters Brightvue anti-reflective system of multicoated lenses provides over 92% anti-reflection capability for high levels of light transmission and optical clarity necessary for dawn-to-dusk big game hunting BDC reticle trajectory-compensating system is designed and calibrated to provide fast, simple aiming points for various shot distances 100% water- and fog-proof housing; O-ring sealing and nitrogen filling ensure moisture never penetrates interior Includes limited lifetime manufacturer's warranty