Paintball guns, also known as markers, are devices used in the sport of paintball to shoot small, round capsules filled with paint. These guns operate using compressed air or CO2 to propel the paintballs at high speeds. They come in various styles, including pump, mechanical, and electronic, each offering different levels of performance and customization. Players use paintball guns in competitive games, where they aim to eliminate opponents by hitting them with paintballs. Safety gear, such as masks and protective clothing, is essential to prevent injuries during play. The sport promotes teamwork, strategy, and physical activity.