The gap between tactical mid- and long-range shooting is gone. Top off your carbine or DMR rifle with a first focal plane optic that&';s versatile, tough, ultra-clear at any magnification, and specifically designed for rapid adjustment in fast-changing target scenarios. Optical Features First Focal Plane Reticle Scale of reticle remains in proportion to the zoomed image. Constant subtensions allow accurate holdover and ranging at all magnifications. XD Optical System Extra-low dispersion (XD) glass increases resolution and color fidelity, resulting in Illuminated Reticle Provides precise aiming under low-light conditions. RevStop(TM) Zero System Patented streamlined design offers a toolless zero stop for rock-solid return to zero after turret adjustments. Glass-Etched Reticle Allows for intricate reticle design. Protected between two layers of glass for optimum durability and reliability. Fully Multi-Coated Lenses Anti-reflective coatings on all air-toglass surfaces provide increased light transmission for greather clarity and low-light performance. Construction Features ArmorTekA(R) Ultra-hard, scratch-resistant coating protects exterior lenses from scratches, oil and dirt. Single-Piece Tube Maximizes alignment for improved accuracy and optimum visual performance, as well as ensures strength and waterproofness. Aircraft-Grade Aluminum Constructed from a solid block of aircraft-grade aluminum for strength and rigidity. Low Glare Matte Black Annodize Corrosion and wear resistant anodization provides low-glare matte surface and helps camouflage the shooter&';s position. Nitrogen Gas Purged Gas purged and O-ring sealed for fogproof and waterproof performance in all conditions. Waterproof Designed to withstand harsh weather conditions Fogproof Nitrogen gas purging prevents internal fogging over a wide range of temperatures Shockproof Designed to withstand the highest levels of recoil and impact. Convenience Features Fast Focus Eyepiece Allows quick and easy reticle focusing Throw Lever The included throw lever can be installed for quick and easy magnification adjustments