HD103C Reflex Dot Scope Built With Red Laser Module. This premium compact red dot delivers the speed of reflex sighting in a lightweight 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 features a built-in top Picatinny rail for mounting extra tactical accessories. Besides, it comes with an integrated external red laser module (625-660nm, less than 5mW), providing auxiliary aiming support for low-light shooting scenarios.