The Nitro 505 Oracle X with speed of 505 feet-per-second and and the Burris Oracle X Rangefining Scope, the Nitro 505 is the fastest crossbow on the market and provides you an automatic aimpoint for increased accuracy.The 2.5-7x Burris Oracle X Rangefinding Crossbow Scope and features a built-in laser range finders that generate a single, precise illuminated aim point automatically adjusted for both distance and angle allowing you to see your target, unobstructed by reticle pattern, and leading to greater accuracy and more ethical shots.