Vortex Viper PST Gen II 5-25x50 FFP Brand: Vortex Name: Viper PST Gen II 5-25x50 FFP Tube diameter: 30.00 mm Objective bell diameter: 58.42 mm Ocular bell diameter: 45.72 mm Added by: GunDudeUSA Confirmed by: GunDudeUSA Back | New