This Vortex Razor HD 5-20x50 riflescope with EBR-3 reticle and MRAD adjustments features the APO system, optically indexed lenses, HD lens elements, XR fully multi-coated, glass-etched reticle, single-piece tube, aircraft-grade aluminum, hard anodized stealth shadow finish, ArmorTek, exposed tactical-style turrets, side focus, and RZR zero stop.