The Model 18 is a type of firearm designed by the American company Colt's Manufacturing Company. It is known for its semi-automatic action and is often used in various shooting sports and personal defense. The design features a lightweight frame, making it easy to handle and carry. Introduced in the early 20th century, the Model 18 has gained popularity among enthusiasts for its reliability and accuracy. It typically uses a magazine-fed system, allowing for quick reloading. The firearm is part of a broader category of handguns that includes other models from Colt and similar manufacturers.