CRFSC Major Parts and Actions 2

Question 1

What is the function of the extractor on a semi-automatic pistol?

Accepted Answer

It grips the rim of the cartridge case to pull it from the chamber

Answer

The extractor is a spring-loaded hook that grips the cartridge rim and pulls the spent case out of the chamber during cycling.

Question 2

On a bolt-action rifle, what is the primary purpose of the locking lugs?

Accepted Answer

To secure the bolt to the barrel during firing, containing chamber pressure

Answer

Locking lugs are projections on the bolt head that rotate into matching recesses in the receiver, securing the bolt and safely containing the high pressures generated when a round fires.

Question 3

What part of a double-action revolver allows the shooter to fire without manually cocking the hammer?

Accepted Answer

The trigger linkage that cocks and drops the hammer in one pull

Answer

In double-action mode, a single long trigger pull simultaneously cocks the hammer (or an internal striker) and releases it to fire the cartridge.

Question 4

Which component in a semi-automatic rifle's gas-operated system first receives propellant gas tapped from the barrel?

Accepted Answer

The piston or gas tube

Answer

In a gas-operated system, propellant gas is tapped through a port in the barrel and travels through the gas tube (or acts on a piston) before impinging on the bolt carrier to cycle the action.

Question 5

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

Accepted Answer

To strike the case and flip it clear of the action after extraction

Answer

The ejector is a fixed or spring-loaded component that strikes the base of the extracted cartridge case, kicking it out of the action.

CRFSC - Canadian Restricted and Non-Restricted Firearm Safety Practice Test

CRFSC - Canadian Restricted and Non-Restricted Firearm Safety Practice Test

CRFSC Major Parts and Actions 2