What part of a revolver is chambered for a specific caliber of ammunition?

The cylinder of a revolver is the component that is specifically chambered for a particular caliber of ammunition. This section of the firearm contains multiple chambers, each capable of holding a round of ammunition. When the revolver is fired, the cylinder rotates to align a chamber with the barrel, allowing a round to be fired.

Understanding the function of the cylinder is crucial because it directly impacts the type of ammunition the revolver can use. Each cylinder is designed to accommodate a specific caliber, ensuring proper fit and function when firing. The other parts of the revolver, such as the trigger, barrel, and frame, play significant roles in operation and structure, but they do not specifically house the ammunition in the way the cylinder does. The barrel guides the bullet upon firing; the trigger initiates the firing mechanism; and the frame provides overall support for the revolver. However, it is the cylinder that truly specifies the caliber compatibility of the revolver.