The Viper PST from Vortex offers top-tier performance in a riflescope designed and built to the standards precision tactical shooters request. Quickly and accurately dial in shots with matching reticle and turret measurements. Professional-grade illuminated reticles are designed for daytime, low light, and nightvision devices. The illumination control can be turned on or off with a single click between each intensity level. Optically indexed lenses deliver optimum edge-to-edge image sharpness and brightness. Best of all, it's backed by Vortex’s VIP Unlimited Lifetime Warranty.