Which two basic revolver actions are commonly identified?

The identification of revolver actions primarily revolves around the mechanisms that operate the firing process when the trigger is engaged. The two basic types of revolver actions are single action and double action.

In a single-action revolver, the hammer must be manually cocked before each shot can be fired. This means that each time the trigger is pulled, the action only releases the hammer to strike the cartridge. The user has to perform an additional action (cocking the hammer) to prepare the weapon for firing.

In contrast, a double-action revolver allows the user to fire the weapon by simply pulling the trigger. This action both cocks the hammer and releases it in one continuous motion. This means that the revolver can be fired without having to manually cock the hammer, making it quicker and easier to use in situations that require rapid response.

These characteristics define the operational functionality of revolvers and are critical for anyone studying firearms and their mechanisms, particularly in contexts like security and law enforcement training. Other options presented do not relate to the core mechanics of revolver actions in the same way.