The scopes First Focal Plane (FFP) and impressive Japanese ED glass clarity makes for an unparalleled shooting experience. The custom designed MR1-MOA advanced reticle is fully illuminated and offers quick hold-over points for windage and elevation. The exposed .25 MOA 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 mfg. Free Batteries For Life program and are covered under the Mfg. Lifetime Protection Guaranteed Warranty.First Focal Plane (FFP): Glass etched MR1-MOA 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. 4-16x50mm scope makes objects seem four to sixteen times closer than with the naked eye featuring a 50mm Objective LensExposed turrets with MR1-MOA ADVANCED RETICLESingle piece 30mm Anodized Aluminum main tube is constructed to handle the most demanding environments Waterproof and Fog proof with coated lenses to protect from scratches oil and debris. Nitrogen purged and O-Ring sealed