Created as an evolution of the military scopes used on the MK12 SPR (Special Purpose Rifle), this modern optic extends the limits of tactical carbines. A 3-turn M5C3 dial tops the elevation turret, providing 30 MILs of adjustment in 0.1 MIL increments, and the patented ZeroLock ensures the dial won't move when knocked around. This mid-range scope is as bomb-proof as it gets, but it's also incredibly lightweight and accurate. With its first focal plane illuminated reticle, 2-10x magnification range, and side focus parallax adjustments, engaging in close-quarters combat is just as easy as identifying threats from a distance. Built around Leupold's Professional-Grade Optical System, the Mark 5HD offers unmatched light transmission that's designed to perform in the most challenging conditions. Its industry-leading glare reduction provides a clear image in harsh, direct light, while the resolution and clarity will meet the demands of any professional guide or shooter. 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. The unique combination of features, durability, and professional-grade optical performance guarantees that the Mark 5HD can handle any challenge you throw at it. It's 100% waterproof and fogproof, and like all Leupold Scopes, it's designed, machined, and assembled in the USA and guaranteed to perform for life. Professional-Grade Optical System offers unmatched light transmission First focal plane TMR illuminated reticle provides easy ranging and holdover info Lightweight aluminum 35mm main tube is tough enough to handle rough treatment M5C3 3-turn elevation dial provides 30 MILs of adjustment 100% waterproof, fogproof and shockproof ZeroLock system eliminates accidental dial movement ZeroStop for easy return to zero 0.1 MIL adjustments for windage and elevation Side focus parallax adjustments allow