What is the main function of the trigger on a handgun?

The trigger on a handgun serves a crucial role in the firing process by releasing the firing mechanism. When the trigger is pulled, it engages a series of internal components that ultimately results in the firing pin striking the primer of the cartridge, causing the weapon to discharge. This action is essential for the handgun to operate effectively, as it directly connects the shooter’s intent to the gun's firing process.

In understanding this function, it's important to note that other components of the handgun play different roles. For instance, the loading of the next round occurs through the action of the slide cycling, which is separate from the trigger's operation. Similarly, neither the ejecting of the magazine nor the resetting of the safety lock involves the trigger's function, as these are independent mechanisms related to the overall operation and safety of the firearm.