ATN uses the purest grades of heavy glass and computer aided optical designs. All lenses are multi-element, high aperture and multi coated. Night vision devices utilize only the best hand selected Image Intensifier Tubes. Material range from titanium, aircraft quality aluminum to hi-impact plastic. All unit feature O-rings, nitrogen purging and hard exterior coating. It does not get any better than ATN8-24x75LU Day Vision Scope for target and varmint shooting. An amazing 75 mm objective lens provides the user with the brightest image available in a daytime scope. Includes 2 interchangeable cams (calibers .22-250, .308, .30-06, .243 Win, 7 mm Mag, .300 Win Mag, .50 BMG). Also includes 1 set of 30 mm steel rings. The 8-24x75LU Day Vision Scope is the ultimate varmint / target scope. Features: * Magnification: 8 - 24 x * Objective Diameter: 75 mm * Mounting: 30 mm steel rings (Included) * Rangefinding: 2,000 yards * Illuminated Reticle * Windage & Elevation adjustments @ 100 yards: 1 click = 1/8 MOA All ATN units come with carrying cases, batteries, users manuals and instructional video. For all warranty claims, please contact ATN Warranty center directly at 1-800-910-2862 for repair or replacement. Non Returnable to Cheaper Than Dirt!