A red dot sight is a type of non-magnifying reflector sight used on firearms, allowing shooters to aim quickly and accurately. It projects a red dot onto a lens, which the shooter aligns with their target. This sighting system is popular among hunters, sport shooters, and military personnel for its ease of use and speed. Red dot sights come in various styles and can be mounted on rifles, shotguns, and handguns. They typically feature adjustable brightness settings to accommodate different lighting conditions. Many models are also designed to be durable and waterproof, making them suitable for various environments.