Feature a Crisp 4x Magnification: Presents a Clear, Sharp Image with Centered Reticle Adjustment a Flip-to-Side Mount: Instantly Switch Between 1x and 4x for Versatile Shooting Needs a Precision Tuning: Adjustable Windage and Elevation for Perfect Alignment with Red Dot a Broad Compatibility: Works Seamlessly with SCRD-45, SCRD-46, SCRD-47, SCRD-12, SCRD-12II, SCRD-51, SCRD-33, SCRD-34, SCRD-26II, SCRD-04, SCRD-23, and SCRD-48 Relations Specification A Magnification: 4x A Objective Lens Dia: 26mm A Exit Pupil: 6.5mm A Length: 115mm (4.5 inch) A Height: 36mm (1.4 inch, from the base to the ring center) A Weight (net):230g (8.1 ounce, without mount) A Eye Relief: 75mm (3.0 inch) A Field of View (ft@100yds):26 feet A Optics Coating: Fully multi coated A Tube Dia.:30mm A Click Value: 1 MOA A Elevation Range: 40 MOA A Windage Range: 40 MOA A Parallax Setting: 100 yards A Shock tested to 750g, water resistance A Windage & elevation adjustable ONLY for red dot sight image, but without changing the actual ZERO of sight A High quality 6061 T6 aircraft grade aluminum with rubber cover A Diopter compensation from fast-focus eyepiece (+2 to -2) A Including items: 30mm flip-to-side weaver mount ring, flip-up cap and cleaning cloth etc.