The Crimson Trace CTL-5318 5 Series is a feature rich 3-18x50mm mid-range rifle scope that has been purposefully built from the ground up. The scopes First Focal Plane (FFP) and impressive Japanese ED glass clarity makes for an unparalleled shooting experience. The custom designed MR1-MIL advanced reticle is fully illuminated and offers quick hold-over points for windage and elevation. The exposed .1 MIL tactical turrets provide a precise and rugged feel when dialing for the most accurate of shots. The entire Crimson Trace Scope Line offers EZ Mount Leveling Indicators for quick and exact mounting and red alignment ring for proper eye placement. All Crimson Trace Scopes are part of the FREE Batteries For Life program and are covered under the Lifetime Protection Guaranteed Warranty.First Focal Plane (FFP): Glass etched MR1-MIL Advanced Illuminated reticle sits in front of the magnification mechanism scaling to provide correct ballistic hold points at any range. This feature allows the reticle to be sighted in at any part of the magnification scale and precise range measurments. Numerous windage holding points allow for on the fly adjustments during ever-changing environmental conditions. Premium Fully Multi-Coated ED Glass leads to enhanced image quality across the visual spectrum. The 3-18x50mm scope makes objects seem three to eighteen times closer than with the naked eye featuring a 50mm Objective LensExposed turrets with MR1-MIL Advanced Reticle: Allowing for elevation and windage adjustments makes the 5-Series optimal for long range precision hunting applications while being lightweightZero-Stop for simplified return to zero and 2nd rotation indicatorIncredibly forgiving eye-box with diopter adjustment to maintain a focused reticle Single piece 30mm Anodized Aluminum main tube is constructed to handle the most demanding environmentsWaterproof and Fog proof with coated lenses to protect from scratches oil and debrisNitrogen purged and O-Ring sealed