Diamondback Tactical 4-12x40 VMR-1 Reticle By Vortex Optics Product Overview When Vortex Optics says precise and they mean it. Exposed tactical turrets built for dialing elevation and windage allow quick and precise bullet drop and wind drift compensations at extended ranges. These turrets track better than any Bloodhound and they reliably return to zero every time. A zero rest feature lets you re-index the zero reference marks on both turrets after sight in. Fiber optic rotation indications integrated into the turrets provide a visual cue for the turret's position as well. Product Specifications: Magnification: 4-12 x Objective Lens Diameter: 40 mm Eye Relief: 3.9 inches Field of View: 23.6-7.9 feet/100 yards Tube Size: 1 Inch Turret Style: Tactical Adjustment Graduation: 1/4 MOA Travel per Rotation: 12 MOA Max Elevation Adjustment: 70 MOA Max Windage Adjustment: 70 MOA Parallax Setting: 100 yards Length: 14.2 inches Weight: 16.2 ounces