The Vortex Viper PST series delivers what the serious shooter demands: precision riflescopes. The Viper PST boasts features associated with top-tier riflescopes. Featuring a full-fledged military-grade scope, ample windage and elevation adjustment, the Vortex Viper PST (Precision Shooting Tactical) family of riflescopes leaves no room for error. Perfect for extreme long-distance tactical shooting, the Vortex Viper can withstand harsh environments and will not breakdown under the stress of large caliber rifles. Equiped with ArmoTek technonology, the lenses of the Viper PST will be protected from scratches, oil and dirt. Scopes are available with various choices of reticles in the first or second focal plane. A great value rifle scope. Choose the Viper PST for extreme performance.