Leupold Mark 4 Riflescope Series 1.5-5x20mm PR, Matte, SPR Reticle #59100 Free Shipping! Mark 4 scopes create opportunities earning Leupold its place on the front lines in tactical situations. The Mark 4's sophisticated design delivers edge-to-edge sharpness, and excellent low-light visibility. The maintubes are milled from a solid piece of 6061-T6 aircraft aluminum. The 30mm diameter provides enough room for extended travel of the Windage and elevation adjustments. The oversize Windage and elevation knobs on the Mark 4 M1-10x40mm are easy to grip. Plus, you get audible and tactile feedback from the 1/4-MOA clicks. Once sighted-in, the knobs can be zeroed. Also, the elevation knob has a horizontal scale that allows you to count adjustment revolutions. Mark 4 scopes also employ a turret-mounted focus knob that lets you adjust out parallax for specific ranges, from 50 yards to infinity, in a shooting position without taking your eye off of the target. Comes complete with lens shade and Butler Creek Flip Open lens covers. -Actual Magnification: Low 1.5/High 4.5 -Finish: Matte -Reticle: SPR -Optimum Eye Relief: Low 4.4"/High 3.6" -Unrestricted Objective Lens Diameter: 0.8" -Weight: 9.7 oz. -Length: 9.3" -Maximum Adjustment Elevation & Windage @ 100yards: 120" -Field of View @100 yards: Low 65.7 ft./High 23.9 ft.