The HG-M2 and HG-D2 are the next generation reflex sights from AimShot. With a more rugged body and lens, the HG-M2 and HG-D2 are 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 fro rapid firing and tracking moving targets. Completely parallax-free with unlimited eye relief. Easily switch between four reticles with a flip of a switch. 10 hours battery life.