Vortex Razor HD4000 RangefinderVortex Razor HD4000 Rangefinder The Vortex Razor HD4000 delivers 4,000 yard precision laser ranging in a compact, rugged package built for Colorados long range elk and mule deer hunting where knowing your exact distance is critical to making ethical shots. Angle compensated ranging gives you the true horizontal distance for accurate holdovers on steep Colorado terrain. What Is the Vortex Razor HD4000 Best For? The Razor HD4000 is built for long range