CRFSC Major Parts and Actions 5

Question 1

What is the function of the gas port drilled through the barrel of a gas-operated semi-automatic firearm?

Accepted Answer

It allows a measured amount of propellant gas to be tapped off to cycle the action

Answer

The gas port is a small hole drilled into the barrel at a calculated distance from the chamber; propellant gas enters here and is directed to operate the action (via a piston or gas tube) after the bullet passes the port.

Question 2

Which part of the trigger group is responsible for resetting the trigger to a fireable position after each shot in a semi-automatic firearm?

Accepted Answer

The trigger return spring

Answer

The trigger return spring pushes the trigger forward after each shot, resetting it to its original position so the next trigger pull can engage the sear and fire the weapon.

Question 3

On a revolver, what is the purpose of the hand (also called the pawl)?

Accepted Answer

It rotates the cylinder one position each time the hammer is cocked or the trigger is pulled

Answer

The hand is a small lever attached to the hammer or trigger that engages the cylinder ratchet and advances the cylinder one chamber per trigger or hammer cycle.

Question 4

What is the primary difference between a fixed barrel and a tilting/dropping barrel in a semi-automatic pistol?

Accepted Answer

Fixed barrels are more accurate because the barrel never moves during cycling; tilting barrels move to unlock from the slide during recoil

Answer

A fixed barrel (common in blowback designs) remains stationary, while a tilting/dropping barrel (Browning-style) cams downward to unlock from the slide during the rearward recoil stroke, allowing the action to cycle.

Question 5

What does the term 'action' refer to when describing a firearm?

Accepted Answer

The mechanical assembly that loads, fires, extracts, and ejects cartridges

Answer

The action is the complete mechanical system — including the bolt, trigger group, extractor, and ejector — that performs the cycle of operations: feed, chamber, lock, fire, unlock, extract, and eject.

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 5