The optical and mechanical tolerances of these riflescopes are so close and tight you'll enjoy unparalled accuracy and consistency when in the field or at the range under any conditions. And now there is a model available with an Illuminated Reticle for high visibility in low-light conditions. All lenses are pure grades of optical glass, ground and polished to exacting standards for a perfect optical curve. Each is then chemically multicoated (including the outer surface) to eliminate glare and reflections and to provide maximum light transmission. Finger-adjustable, 1/8"-MOA windage and elevation adjustments are oversized, so they can be manipulated even when wearing gloves. The adjustments are so precise, you can be sure each click will be consistent with the others. And the system is strong enough to hold zero through years of shooting. The super-smooth zoom mechanism stays on target when changing power. The tracking cells, which secure the lenses, fit into the tube with absolute minimum tolerances. They won't shift under recoil, so your point of impact stays solid. The nitrogen-filled scope chambers are multiple sealed, which ensures they will remain both water- and fogproof . An adjustable objective eliminates parallax problems. Each scope includes two (3" and 5") sunshades that can be screwed together for extra glare reduction. The generous eye relief reduces tunnel vision. Includes screw-on metal dust caps.