No matter the reason you shoot; be it for sport, sustained living, or competitive it is vital to hit what you are aiming at. One of the best kept secrets in the optics industry is Sightron. Sightron designs and manufactures feature laden optics that are very competitively priced. Using innovative and patented processes along with having a commitment to providing excellent customer relations has given Sightron a solid reputation that you should explore further. Give Sightron a "Shot" to deliver the features you want with the quality you demand and you will be a loyal customer for life. All SIII Series riflescopes provide the resolution and windage and elevation latitude required for Long Range F-Class, Benchrest and Tactical matches and is designed for ease of use in prone and bench shooting. All SIII riflescopes feature a 30mm main tube with extra wall thickness for added ruggedness and durability. Side parallax focus is standard on all SIIISS models. All SIII riflescopes feature Sightron's unique Exactrack windage and elevation adjustment system, Zact-7 Revcoat seven layer multi-coating throughout the entire lens system, precision reticles and are waterproof, shockproof, fogproof and nitrogen filled.