A red dot sight is a type of non-magnifying reflector sight used on firearms. It projects a red dot onto a lens, allowing shooters to aim quickly and accurately without aligning traditional iron sights. This makes it popular for both competitive shooting and tactical applications. These sights are designed for fast target acquisition, especially in dynamic situations. They are often mounted on rifles, shotguns, and handguns, providing a clear point of aim. Many models are adjustable for brightness and can be used in various lighting conditions, enhancing versatility for shooters.