Lever action is a type of mechanism commonly used in firearms, where a lever is operated to load, fire, and eject cartridges. When the lever is pulled down and then raised, it cycles the action, allowing a new round to be chambered. This design is known for its smooth operation and quick follow-up shots. The lever action system was popularized in the 19th century, particularly with the Winchester rifle, which became iconic in American history. This mechanism allows for a faster rate of fire compared to single-shot firearms, making it a favored choice for hunting and sport shooting.