With a state-of-the-art design, the Redfield Revolution 3-9x40mm TAC-MOA Riflescope provides superior optical and mechanical functionality that is second to none. This riflescope manufactured by the experts at Redfield features a Tac-MOA reticle with stadia lines on the vertical and horizontal crosshairs set at 2-MOA increments. The Redfield Revolution 3-9x40mm TAC-MOA Shockproof Tactical Scope offers precision 1/2-MOA click adjustments for windage and elevation. The Rapid Target Acquisition lockable eyepiece provides generous eye relief and eliminates the need to search for the visual "sweet spot" when time is critical. Rest assured, the Redfield Revolution 3-9x40mm TAC-MOA is the ultimate choice for the expert shooter. Specifications: - Magnification: 3x - 9x - Objective Lens Diameter: 40 mm - Reticle: TAC-MOA - Tube Diameter: 1 in/25.4 mm - Finish: Matte - Adjustment Click Value: 0.25 MOA - Adjustment Range: 56 MOA - Weight: 12.6 oz - Field of View: 13.1-32.9 ft/100 yds - Eye Relief: 3.7-4.2 in - Length: 12.3 in - Color: Black - Adjustment units: MOA - Exit pupil: 21.1-4.7 mm.