The Mark 5HD is up to 20 ounces lighter than other riflescopes in its class, giving you an advantage in the field or at the range. Ergonomically designed with more tactile and audible click adjustments, larger numbers and a high-speed throw lever, the Mark 5HD is built to put accurate fire downrange faster. Features professional grade optical system, first focal plane, side focus, M5C3 Zero Lock adjustments, Zero lock dial, motion sensor technology, nightvision compatible illumination and Zero Stop. Length 15.67" Proofs Fog/Shock/Waterproof Series M5C3 Weight 30 oz Reticle Illuminated FFP Tremor 3 Objective 56mm Eye Relief 3.80" - 3.60" Coating Type Waterproof, Fogproof Field Of View 4.20 - 20.50 ft @ 100 yds Magnification 5-25x Tube Diameter 35mm Exit Pupil Range Side Focus Parallax Adjustment 50 yds