Nightforce’s analog illumination system powers adjustable brightness, red illuminated reticles in most SHV, NXS, and Benchrest riflescopes. SHV and Benchrest riflescopes use a rotary dial to turn on and adjust the brightness. NXS riflescopes with analog illumination are turned on by pulling the illumination control knob out and brightness is adjusted using a small screwdriver. The Nightforce analog system is a simple, reliable, and effective way to increase your ability to shoot in all lighting conditions and environments.