The 6-24x50 Crossfire II AO Riflescope from Vortex Optics features a large objective lens with fully multicoated optics for low-light performance such as at dawn and dusk. Featuring the versatile Dead-Hold BDC duplex reticle on the Second Focal Plane (SFP), this utilitarian reticle is easy to see and use in all lighting conditions at all magnifications. With the reticle on the SFP, the subtensions are accurate at 18x. Performance is enhanced further with 1/4 MOA per click shot correction and 15 MOA of travel for precise impact-point, and windage and elevation adjustments. A fast-focus eyepiece with a 4" eye relief lets you quickly re-focus after changing magnifications or targets. Designed for the rigors of outdoor use, the housing has a matte-black scratch and corrosion-resistant anodized finish and is nitrogen-filled for water and fogproof performance.