The Trijicon Tenmile 3-18x44 is a first focal plane riflescope that lets you dial-in long-range shots-in any environment, in any light-with confidence. Expect pinpoint precision at multiple ranges, all-weather performance, and outstanding quality and design for repeatable precision. The MRAD Precision Tree reticle offers precise wind and range holds, and the exposed zero stop elevation adjuster allows you to quickly return to zero. Features: Pinpoint aiming in any condition - models feature options for precise milling or holdover reticles available in first or second focal plane for ensured accuracy Edge-to-edge clarity - fully multi-coated, broadband, anti-reflective glass provides excellent light transmission, true detail and color with zero distortion Increased adjuster range - 30mm tube offers increased adjuster range and durability Ultra durable for ensured reliability - aircraft-grade aluminum and ruggedized design engineered to withstand extreme conditions and tested to military standards and protocols Quick and easy adjustments - crisp, precise, windage/elevation adjusters require no tools, capped or zero stop adjusters ensure no accidental shift Confident aiming in any light - user-selectable led brightness settings with an "off" in between each setting to adapt to any environment Optimal flexibility - generous windage and elevation adjustment for maximum total travel Repositionable magnification lever - accommodates different shooting positions and rifle configurations 5 red and 5 green illumination settings Led illumination source First focal plane 39 hr red and 94 hr green battery life