Vector Optics Paragon 2-10x50 Scope 30mm Monotube Super Sharp Clear by Using Germany Glass & Optical System, 1/10 MIL Adjustment with Lock Feature, With Honeycomb Sunshade & Mark Mount Ring & Big Side Wheel, Long Eye Relief, Mil-spec Black Matte, 30mm Monotube, Illumination, Side Focus Min at 20 Yards (Marked as 25 Yards), Tactical Turrets Magnification:2-10x Objective Lens Dia:50mm Ocular Lens Dia:38mm (1.5 inch) Ocular Lens Length:61mm (2.4 inch) Exit Pupil:22.5.0-5.0mm Optics Coating:Fully-multi coat diamond clear Field of View:48.7-9.7 feet @ 100 yards Eye Relief:>100mm (>4.0 inch) Length:320mm (12.6 inch) Weight:665g (23.5 Ounce) Tube Dia.:30mm Monotube Click Value:1/10 MIL (0.1CM, 0.1MRAD) Elevation Range:35 MIL Windage Range:35 MIL Side Focus:min at 25 yards, 50, 100, 200, 400 and infinite Parallax Setting:100 yards Reticle:Etched glass VPA-2 MIL Reticle Illumination:Stepless red Battery:CR2032 Distance between objective lens part and middle turret: 42mm (1.7 inch) Length of middle turret part: 43mm (1.7 inch) Distance between middle turret part to power ring: 44mm (1.7 inch) Number of Lens: 12 pcs Shock tested to 750g, water proof at 300 meters and 54 degree Parallax of Reticle (minute): <0.3' Fully nitrogen purged to eliminate any fogging of the lenses internally Adjust plate is NOT fixed, after zero the scope you can turn the plate to zero High quality 6061 T6 aircraft grade aluminum Turret lock feature: press down to lock without click movement Diopter compensation from fast-focus eyepiece (+2 to -2) Including items: 30mm tactical picatinny ring, lens caps, big side wheel and honeycomb sunshade