The 171565 model from Leupold embodies the legendary durability, ruggedness and stunning optical quality that Leupold is known for, now enhanced with a powerful 6:1 zoom ratio. This VX-6HD scope delivers images of exceptional clarity from edge to edge, across the entire magnification range.Incorporating the trademark Twilight Max Light Management System and DiamondCoat 2, along with edge-blackened lead free lenses, the Leupold VX-6HD guarantees extraordinary clarity and superior light transmission. It also features an extreme fast-focus eyepiece designed to provide a generous eyebox, unmatched field of view, and optimal diopter adjustment while out in the field.Further enhancing its durability and reliability, the scope comes with a robust 30mm maintube, a twin bias spring erector system, and two-turn CDS Zero Lock finger click adjustments, ensuring maximum adjustment range and precision. In addition, every purchase of Leupold VX-6HD rifle scopes includes a free Custom Ballistic Dial.Leupold continues to innovate with their second-generation Argon/Krypton waterproofing. This feature resists the effects of thermal shock much more efficiently than the standard nitrogen, providing impressive resilience in a variety of conditions.