What part of the gun strikes the primer?

The firing pin is the component of a firearm that strikes the primer to ignite the gunpowder in the cartridge. When the trigger is pulled, the firing pin is released from a spring-loaded position and travels forward into the primer of a round of ammunition. This impact creates a small but intense burst of pressure that ignites the primer, leading to a combustion reaction that ultimately propels the bullet out of the barrel.

In the context of firearm operation, the firing pin is essential because it initiates the firing sequence. Proper functioning of the firing pin is crucial for the safe and effective discharge of a firearm. Therefore, understanding the specific role of the firing pin helps ensure that users can identify and troubleshoot issues, reinforcing the principle of firearm safety.