The Diamondback - loaded with features! First, the solid one-piece aircraft-grade aluminum alloy construction makes the Diamondback riflescope virtually indestructible and highly resistant to magnum recoil. Argon purging puts waterproof and fogproof performance on the agenda, and advanced fully multi-coated optics raise an eyebrow when crystal clear, tack-sharp images appear in the crosshairs. Look for all this and more in a riflescope you'd expect to cost quite a bit more-but doesn't. We can live with that. Diamondback 3.5-10x50 Dimensions (in inches) Lengths L1 L2 L3 L4 L5 L6 12.5 2.15 2.1 5.48 3.85 3.1 Heights H1 H2 2.29 1.69 Diamondback 3-9x40 Dimensions (in inches) Lengths L1 L2 L3 L4 L5 L6 11.61 2.0 2.1 5.4 3.07 3.1 Heights H1 H2 1.89 1.69 Diamondback 4-12x40 Dimensions (in inches) Lengths L1 L2 L3 L4 L5 L6 12.0 2.46 2.15 5.85 3.0 3.1 Heights H1 H2 1.89 1.69 Included in the Box Removable lens covers Lens cloth Magnification 3.5-10x Objective Lens Diameter 50 mm Eye Relief 3.3 inches Field of View 35.8-13.5 ft/100 yds Tube Size 1 inch Turret Style Capped Adjustment Graduation 1/4 MOA Travel Per Rotation 15 MOA Max Elevation Adjustment 65 MOA Max Windage Adjustment 65 MOA Parallax Setting 100 yards Length 12.5 inches Weight 16.2 oz