Precision accuracy. Smart engineering. Rock solid durability. You get all three - and then some - with the Vortex Razor HD Gen II 4.5-27x56mm Rifle Scope. Everything about the Razor HD Gen II is first-class, from the APO lens system and glass-etched, first focal plane EBR-7C MOA reticle to the L-Tec turret system, integrated parallax/illumination control and rock-solid, 34mm aircraft aluminum tube. Image quality, color and brightness are superb. Adjustments are simple and precise. And the rugged, waterproof, Argon-purged platform is absolutely rock-solid. This is pro-grade performance, designed to give you the clear advantage in the field, at the range and in competition. First-class Optics For any scope, the optics make all the difference. Vortex Razor HD Gen II scopes are built around a topnotch APO objective lens system with index-matched lenses and premium high-density, extra-low dispersion glass. Plus, all air-to-glass surfaces are fully multicoated with XR Plus proprietary coatings. The result is stunning image quality, maximum brightness and superior edge to edge sharpness. Simply put, you see targets more clearly, in all conditions, even at the highest magnification. Built like a tank for extreme durability If you're looking for a lightweight scope, look elsewhere. Vortex Razor HD Gen II rifle scopes are heavy-duty and designed to perform in extreme environments. It all starts with a rock-solid, shockproof tube machined from a single piece of aircraft grade aluminum with hard-coat, anodized finish. O-ring sealed, Argon-purged construction ensures waterproof, fogproof performance, while ArmorTek coating protects lenses from scratches, oil and dirt. Even the internal screws and erector tube system are heavy-duty. Apochromatic objective lens system uses index-matched lenses to correct color across the entire visual spectrum HD Lens Elements with Premium HD (High Density) extra-low dispersion glass delivers