Which type of semiautomatic pistol is characterized by a trigger mechanism that fires one shot for each pull of the trigger?

The characteristic of a trigger mechanism that fires one shot for each pull of the trigger specifically defines how the semiautomatic pistol operates with respect to its firing mechanism. In a single action pistol, the trigger performs one action: it releases the hammer or striker to fire a single round. This means that the trigger pull does not perform any other function, such as cocking the hammer, which must be done either manually or by a previous shot being fired.

In contrast, other types of actions, such as double action or double/single action, involve a more complex mechanism where pulling the trigger may also cock the hammer (in the case of double action) and can then fire the round with a single trigger pull. Therefore, understanding that single action pistols require the hammer to be cocked prior to firing allows you to identify the clarity of operation defined in the question.

This distinction emphasizes the straightforward operation of single action semi-automatic pistols, which is a critical concept for understanding various types of firearm mechanisms and their operational characteristics in firearm training and practice.