Extreme sighting speed and superior long-range accuracy are just two of the many advantages P-223 AR Riflescope. Its BDC-600 reticle has open-circle aiming points and hash marks from 100 to 600 yards. It is equipped with tactical-style turrets and zero-reset feature to simplify field adjustments. The Fast-sighting Carbine reticle option was developed specifically for fast-handling shorter barrel ARs and .223 Remington cartridges to engage targets out to 600 yards. Its fully multicoated optics deliver extreme brightness and up to 98 percent light transmission. Included is a generous, consistent eye relief, 1/4-MOA hand-turn, and a tactical-style turrets. This AR Riflescope nitrogen filled and O-ring sealed for waterproof, fogproof performance.