The German-made M5Xi series features world-class engineering and optical systems, built to strict military specs and precisely crafted for victory - on the battlefield, or in competition. The 3-15x is for mid-range shooting, ideal for snipers using the M10 platform or competition shooters with precision bolt guns. Medium range scope with 34mm tube, your choice of etched glass G2B mil-dot reticle, MSR or Horus reticle, patented DuoScale elevation adjustment with a second-rotation scale that's hidden when inactive Magnification 3x-15x Tube Diameter 34mm Length 36 cm (14.2 in.) Battery CR2450 FEATURES: One-Piece Oversized 34mm Tube increases strength and reliability and provides greater elevation and windage adjustments for longer ranges. Broadband Anti-Reflection Coatings for 94% + light transmission to ensure optimal performance in low light. Optimized Exterior Design with larger, positive grip elevation, windage, parallax and illumination knobs and nonslip diopter and magnification adjustment. Illuminated Reticle with seven night and four day levels with two "OFF" positions at each end, and quick standby levels between each for fast return setting. Optimized Tube and Knob Configuration for more mounting options and optimum performance with different rifles and added equipment. Precise Windage/Elevation Adjustment is easy and accurate for repeated accuracy, with tactile click-by-click feedback you can hear and feel. Waterproof/Fogproof durable construction you can trust to stand up to any cold or wet condition. Waterproof to depths of 10 meters. Shockproof and rugged enough to withstand impact testing to 900 Gs on all optical and electronic components. Specifications Field of View at 100 yds. 39.7 - 7.9 Eye Relief 8.9 - 10.9 cm (3.5 - 4.3 in.) Exit Pupil 10.4 - 3.3 mm Length 36 cm (14.2 in.) Weight 921 g (32.5 oz.) Diopter Adjustment Range +2 to -3 Illumination Control Rotary Digital Control with Intermediate Stops Elevation Adjustment Knob DuoScale(TM) / Resettable Zero Wind/Elevation Click Value 1 cm (0.1 mrad) Windage Range at 100 m. 60 cm (6 mils) Elevation Range at 100 m. 260 cm (26 mils) Parallax/Focus Side Focus Parallax/Focus Range 50 m (164 ft.) to Infinity Nitrogen Filled Yes Operating Temperature Range -13Adeg F to +145Adeg F Lens Cap Yes Waterproof/Fogproof Submersible to 10m (33 ft.) Battery CR 2450 Special Features Color Black