A firing pin is a small but crucial component in firearms, responsible for striking the primer of a cartridge. When the trigger is pulled, the firing pin moves forward, hitting the primer and igniting the gunpowder inside the cartridge. This process generates the force needed to propel the bullet out of the barrel. Firing pins can be found in various types of firearms, including handguns, rifles, and shotguns. They are typically made of durable materials like steel to withstand the high pressures generated during firing. Proper maintenance of the firing pin is essential for the reliable operation of the firearm.