Calibrated for crossbows with speeds of 280-440 fps, this Hawke Sports Optics XB30 2-7x32 Crossbow Scope will help you hit your target. The scope offers a bright, high-contrast view thanks to 11 layers of antireflective coating on all optical surfaces. A high-torque zoom ring brings your target into focus quickly. The red- or green- illuminated XB30 reticle features five brightness levels and aim points from 30 to 100 yards, representing 1.5" across. The 30mm maintube provides up to 205 MOA of elevation adjustment and 195 MOA of windage adjustment at 1/2 MOA per click on the capped, low-profile turrets. The scope is nitrogen-filled and O-ring sealed to be fog and waterproof.