Blending many of the best features from Vortex's incredibly popular Viper PST and Viper HS rifle scopes, the Viper HST (Hunting Shooting Tactical) riflescope is built on an ultra-strong 30mm one-piece machined aluminum tube to deliver increased windage and elevation travel and optimal adjustment. An advanced optical system highlighted with a 4x zoom range provides magnification versatility. A forgiving eye box with increased eye relief gets shooters on target quickly and easily. Incredibly precise, repeatable and durable tactical windage and elevation turrets built specifically for dialing, along with its hashmark-based reticle, top off this highly versatile rifle scopes long-range performance features.