The Nikon Monarch 3-12x42 #8420 Matte BDC Riflescope havs fully multi-coated optics for maximum light transmission and sharpest image quality. The large objective lenses of the Nikon's Monarch 3 delivers impressive brightness and the Eye Box Design provides a 4 times magnification range and 4" constant eye relief without sacrificing Field of View making it ideal for hunting. Featuring Quick Focus eyepiece, Locking Side Focus and Hand Turn Reticle adjustment covers a wide variety of hunting situations, including big game, shotgun and slug hunting. The Waterproof, shockproof and fogproof construction is engineered to meet the exacting demands of the most hunters. Enhanced mount ring spacing allows for precise mounting.