BSA 17 Super Mag Scope designed specifically for the WInchter 17 Super Mag Cartridge and feature a patent pending drop compensation reticle engineered for the 20gr. and 25gr. bullet. The new products adhere to BSA Optics rigorous quality standards while offering outstanding performance and optics clarity. All models include a Limited One Year Warranty. FEATURES: RGB-red, green, blue GE glass etched reticle; fast focus with adjustable objective; designed For WInchter 17 Super Mag Cartridge, Ballistic Ranging Reticle for 20gr. and 25gr. weight rounds, Water-Proof, Shock-Proof, & Fog-Proof. Limited Lifetime Warranty. SPECIFICATIONS: Magnification 6-24 Obj. Lens Diameter (mm) 44 Exit Pupil Range (mm) 6.6-2.3 Field of View at100 Yds. 16.6-4.8 Optimum Eye Relief (in) 4 Parallax Setting 10 to Inf. Click Adjustment Value 1/8 Adjustment Range 35-35 Transmission(%) Day/Night Weight (ounces) 21.70.