Final answer:
A revolver is a type of firearm that requires the cylinder to be loaded and unloaded instead of a magazine.
Step-by-step explanation:
A revolver is a type of firearm that has a cylinder, which needs to be loaded and unloaded instead of a magazine. The cylinder holds several rounds of ammunition, which are individually loaded into separate chambers within the cylinder. When fired, the cylinder rotates to align the next chamber with the barrel, allowing for the firing of the next round.