NRA NRA Firearm Mechanics & Operation

Question 1

What is the function of the firing pin in a firearm?

Accepted Answer

To strike the primer and initiate ignition

Answer

The firing pin strikes the primer of the cartridge, initiating the ignition sequence that fires the round.

Question 2

In a semi-automatic pistol, what component strips the cartridge from the magazine and chambers it?

Accepted Answer

The slide/bolt face

Answer

The slide (or bolt face) strips the top cartridge from the magazine and chambers it as it moves forward.

Question 3

What is the purpose of the disconnector in a semi-automatic firearm?

Accepted Answer

To prevent the trigger from firing multiple rounds per trigger pull

Answer

The disconnector resets the sear after each shot, preventing the firearm from firing more than one round per trigger pull.

Question 4

What is headspace in a firearm?

Accepted Answer

The distance from the bolt face to the datum line in the chamber

Answer

Headspace is the distance from the bolt face to the point in the chamber where the cartridge case is supported, critical for safe and reliable operation.

Question 5

In a double-action revolver, what happens when the trigger is pulled?

Accepted Answer

The cylinder rotates, the hammer cocks, and then falls

Answer

In double-action mode, a single trigger pull simultaneously rotates the cylinder, cocks the hammer, and releases it to fire.

(NRA) National Rifle Association Certified Gunsmith Practice Test

(NRA) National Rifle Association Certified Gunsmith Practice Test

NRA NRA Firearm Mechanics & Operation