Vortex Crossfire Red DotVortex Crossfire Red Dot Sight Model: CF RD2 Fast, Reliable, No Nonsense Red Dot for ARs, Shotguns & Rimfire Get on target quicker and stay on target longer with the Vortex Crossfire Red Dot a rugged, straightforward reflex sight built for shooters who want fast acquisition and dependable performance without unnecessary bells and whistles. Perfect for AR 15s, shotguns, rimfire rifles, or even as a backup optic on a hunting rifle, the Crossfire