Recoil-operated firearms use the energy generated by the recoil of the gun when it is fired to cycle the action. This mechanism allows the firearm to automatically eject the spent cartridge, chamber a new round, and prepare for the next shot. The design relies on the backward movement of the barrel or slide, which is then harnessed to perform these functions. Common examples of recoil-operated firearms include many semi-automatic pistols and shotguns. These firearms are popular for their reliability and ease of use, making them suitable for various applications, from sport shooting to self-defense.