The SIGHTRON SIII 6-24×50 LR SF Riflescope, FFP, MOA Reticle (25006) offers a 30mm one-piece main scope tube, made from high quality aircraft aluminum. The riflescope features Sightron’s unique ExacTrack windage and elevation adjustment system. No other system on the market comes close to the precision and performance of ExacTrack. The SIII 6-24×50 scope features the ultimate in all weather construction. It is waterproof, nitrogen filled and provides a lifetime of internal fog protection for inclement weather. All Sightron SIII riflescopes feature ZACT-7 seven layer multi-coating with precision ground glass. These lenses provide superior light transmission and resolution for the ultimate in performance. Precision ground glass etched MOA Reticle in the first focal plane is designed for use in Tactical and Long Range shooting applications.