Burris XTR Xtreme Tactical 201909 Riflescopes are extra-large, ultra-premium lenses produce unsurpassed resolution, clarity, and brightness. Index-matched Hi-Lume multi coating boosts clarity and, enhanced with new StormCoat, causes water to bead and shed off for a clearer view when water drops are present. All 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. XTRs 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 is equipped with the innovative XTR Ballistic 7.62 Reticle that represents the state of the art in tactical optics. The whole package is water proof, fog proof, shock proof and warranted forever. Tactical scopes just don't come any better.