The Winchester 1873 is a lever-action rifle designed by Oliver Winchester and manufactured by the Winchester Repeating Arms Company. Introduced in 1873, it became known as "The Gun That Won the West" due to its popularity among settlers, cowboys, and lawmen during the American westward expansion. This rifle was chambered for various cartridges, including the .44-40, which allowed it to be used effectively for hunting and self-defense. Its innovative design featured a tubular magazine and a smooth lever-action mechanism, making it easy to operate and reload, contributing to its widespread use and iconic status in American history.