Born from decades of field-proven reliability, the Leupold Mark 4HD 1-4.5x24mm delivers elite performance in a lightweight, close-quarters configuration. Ideal for tactical operators, competition shooters, and hunters who demand rapid target acquisition and precision, this optic bridges the gap between red-dot speed and traditional magnified accuracy. Built around a slim 30mm maintube, the Mark 4HD offers exceptional optical clarity, generous field of view, and the ruggedness Leupold is known for. Its Illuminated FireDot BDC reticle provides fast target engagement in varying light conditions, while 1-4.5x magnification allows smooth transitions from tight quarters to mid-range shots. The ZeroLock capped adjustments maintain zero under recoil and rough handling, ensuring consistent performance in any environment. Whether you're clearing corners, running drills, or hunting dense timber, the Mark 4HD's daylight-bright illumination, precision A 1/4 MOA clicks, and 1600-hour battery life guarantee accuracy and dependability when it counts most. And like every Leupold optic, it's waterproof, fogproof, and backed by a lifetime guarantee-because mission failure is not an option. Specifications Magnification Range: 1 - 4.5x Objective Lens Diameter: 24mm Reticle: Illuminated FireDot BDC (Second Focal Plane) Tube Diameter: 30mm Adjustment Value: A 1/4 MOA per click Elevation / Windage Adjustment Range: 165 MOA / 165 MOA Elevation / Windage per Revolution: 25 MOA ZeroLock Capped Adjustments: Yes Illumination: 8 brightness settings (daylight bright) Battery Type: CR2032 Battery Life: 1600 hrs (low), 1000 hrs (med), 300 hrs (high) Linear FOV: 118.8 ft (1x) / 25.2 ft (4.5x) @ 100 yds Eye Relief: 3.7 - 3.9 in Fixed Parallax: 150 yds Weight: 18 oz Finish: Matte Black Waterproof / Fogproof: Yes Guarantee: Leupold Lifetime Guarantee