Vortex Optics Razor HD AMG 6-24x50 First Focal Plane Riflescopes The Razor HD AMG is impossibly lightweight considering the long list of features packed into its streamlined frame. High density, extra-low dispersion glass and premium XR Plus coatings generate unparalled image quality and brightness. Index-matched apochromatic lenses correct color across the entire visual spectrum. The L-TEC turret system features an integrated locking mechanism to prevent accidental adjustments and a hard zero stop engages for accurate returns after dialing corrections. The glass-etched, first focal plane reticle is incredibly versatile and ensures subtensions remain accurate throughout the entire zoom range. Locking illumination with ten levels of brightness is integrated into the side parallax knob for easy access. A single piece 30mm tube was precision machined and anodized to give you a rock solid platform. It's waterproof, fogproof, and has Armortek coatings to protect the lenses from scratches, oil, and dirt.