Burris has gone to extremes to engineer the ultimate in high-performance optics — XTR Xtreme Tactical Riflescopes. Extra-large, ultra-premium lenses produce unsurpassed resolution, clarity, and brightness. Index-matched HiLume multicoating boosts clarity and, enhanced with new StormCoat™, causes water to bead and shed off for a clearer view when water drops are present. All Burris XTR scope tubes are 30mm, resulting in 25% thicker main tubes and 42% more strength. Double-force coil spring suspension locks the inner tube in place for unfailing accuracy. Burris XTR Tactical Rifle Scopes also feature side turret-mounted parallax adjustment systems. LRS models have a fully integrated side turret-mounted illumination system. The new 1.5X-6X XTR — equipped with the innovative XTR Ballistic 7.62 Reticle — represents the state of the art in tactical optics. The whole package is waterproof, fogproof, shockproof and warranted forever. Tactical scopes just don’t come any better.