The Mueller Tactical Rifle Scope is designed to allow for simple calculation for bullet trajectory with its true mil dot reticle. The glass-etched reticle features multiple aim points to compensate for bullet drop or windage compensation and is also illuminated for effective use in low light. Lenses are fully multi-coated camera quality crystal which provide a bright image that is has lots of contrast. Finger adjustable turrets allow for easy windage and elevation adjustments while the fast focus eyepiece provides quick reticle clarity adjustments. Lifetime factory warranty.