HD103B Reflex Dot Scope Built With Red Laser Module.   This premium compact red dot delivers the speed of reflex sighting in a lightweight, weatherproof, shock-resistant body, perfect for rapid moving-target fire and standard range shooting alike. Equipped with parallax-free optical glass and 4 switchable reticle patterns, it offers both red and green adjustable illumination for crystal-clear high-definition sight images. It also comes with an integrated external green laser module (less than 5mW) with a coiled remote pressure switch, providing auxiliary aiming support for low-light shooting scenarios.