Which device initiates the firing process on a firearm when pressed?

• A. Hammer
• B. Safety
• C. Trigger
• D. Magazine

Answer: (C)

The trigger is the input that starts the firing sequence. When you pull it, you release the mechanism that locks the hammer or the firing pin in place. That release lets the hammer swing forward or the striker move, striking the primer of the cartridge. The primer ignition sets off the powder charge, producing the gas that pushes the bullet out of the barrel. In some designs, pulling the trigger also cocks the hammer (double-action) or simply releases the striker (striker-fired) in one motion. The hammer itself is the actual striking component, not the control you press. The safety can block this release to prevent firing, and the magazine simply holds rounds for loading, not initiating the shot.