Vortex Viper HS riflescopes offer hunters and shooters an array of features sure to be well received. The advanced optical system, highlighted with a 4x zoom range, provides magnification versatility. A forgiving eye box with increased eye relief gets shooters on target quickly and easily. Built on an ultra-strong 30mm one-piece machined aluminum tube, the Viper HS delivers increased windage and elevation travel for optimal adjustment. Included in the Box Protective Lens Caps 4″ Sunshade Lens Cloth Magnification 4-16x Objective Lens Diameter 50 mm Focal Plane Second Focal Plane Reticle Dead-Hold® BDC (MOA) Eye Relief 4.0 inches Field of View 27.4-7.4 ft/100 yds Turret Style Capped Tube Size 30mm Adjustment Graduation 1/4 MOA Travel Per Rotation 12 MOA Max Elevation Adjustment 50 MOA Max Windage Adjustment 50 MOA Parallax Setting 50 yards to infinity Length 13.60 inches Weight 20.4 oz