Sighttron’s SIII Long Range Riflescope series delivers extreme accuracy at extreme ranges. These optics are available in multiple magnifications and a wide range of reticle options from simple crosshairs to complex bullet-drop compensation options. All models in the SIII Long Range family are equipped with Sighttron’s ExacTrack W& E System that provides proper alignment between the adjustments and the erector tube by maintaining the same constant and accurate point of pressure at zero or extreme adjustments, resulting in zero drift. The large oversized tactical knobs are easy to adjust in any weather conditions and are resettable to zero. The new internal zero-stop mechanism provides a tactile and audible positive stop for dead-on zero setting. Like all of Sighttron’s optics, the SIII Long Range scopes feature an exclusive optical design to reduce chromatic aberrations, improve color accuracy, and deliver excellent light transmission. Optical quality is further enhanced with the Zact-7 Revcoat Plus – a multi-coating process that is applied to both surfaces of the lens for maximum anti-reflection performance and the highest light transmission. Features of the SIII Long Range Riflescopes: Available in multiple magnification ranges and reticle options ExacTrack W& E System – eliminates drift Exclusive Optical Design – minimal chromatic aberrations, improve color accuracy, deliver excellent light transmission Zact-7 Revcoat Plus – lens coating technology applied to both surfaces of the lens for maximum anti-reflection performance and the highest light transmission Sightron SIII LR 6-24X50 Mil-Dot Target Scope 25133