What does the trigger do on a firearm?

The trigger on a firearm serves as a small lever that is squeezed to initiate the firing process. When the trigger is pulled, it releases the sear, which allows the firing pin to strike the primer of the cartridge. This ignites the gunpowder and propels the projectile out of the barrel. Understanding the function of the trigger is crucial for safe firearm handling and operation, as it directly affects how and when the firearm discharges. Proper training emphasizes the importance of trigger control to maintain safety and accuracy while shooting.