Built around Leupold's Professional-Grade Optical System, the Mark 5HD offers unmatched light transmission that's designed to outperform in the most challenging lighting 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 riflescopes, it's designed, machined, and assembled in the USA and guaranteed to perform for life.