The NEW & IMPROVED HG-D2 is the next generation Holographic Sight from AimSHOT.  With a more rugged body and lens, the HG-D2 is perfect for high powered rifles and durable enough for everyday use.  The shaded 34mm reflex lens provides a sharp image in all light conditions and is suitable for rapid firing and tracking moving targets.  Completely parallax-free and unlimited eye relief. Easily switch between four reticles with a flip of a switch.  Extra long battery life for continuous use.