The Burris Xtreme Tactical series of rifle scopes, optics, rings and mounts are the absolute ultimate in high-performance optics engineered specifically for military and law enforcement. Burris Xtreme Tactical Rifle Scopes are equipped with extra-large, ultra-premium lenses produce unsurpassed resolution, clarity, and brightness. Burris XT optics feature propietary HiLume ultra-clear, index-matched multi-coating, enhanced with Burris StormCoat. The ultra-low-surface tension coating causes water to form into tighter beads and slide off the glass, leaving more "clean" surface through which to clearly see your target. The enhancement is exclusive to Burris XTR optics. Waterproof, fogproof, amd shockproof, Burris Extreme Tactical gear is warranted forever. Equipped with innovative reticles and top-grade optics, the Burris Xtreme Tactical series represents the state of the art in tactical optics.