Adopting many of the same features found on Vortex's long-range riflescopes, including a tactical elevation turret perfect for dialing, the Viper XBR crossbow scope is specifically built to maximize the performance of today's high-speed crossbows at long range. The Viper XBR offers shooters the ultimate in speed and long-range versatility. The glass-etched, MOA-based XBR-1 reticle is ideal for holding elevation and windage compensation. Reticle illumination and a fast-focus eyepiece ensure sharp, shooter-specific reticle focus. Yes, this changes everything when it comes to hunting with long-range crossbows.