FMF Infantry Weapons Fundamentals 3

Question 1

What is the effective casualty radius of the M67 fragmentation grenade?

Accepted Answer

15 meters

Answer

The M67 fragmentation grenade has an effective casualty radius of approximately 15 meters.

Question 2

When employing the M240B machine gun, what technique prevents barrel overheating during sustained fire?

Accepted Answer

Using controlled burst fire and conducting scheduled barrel changes

Answer

The M240B gunner uses controlled burst fire and rotates spare barrels at regular intervals to manage heat and maintain effective fire.

Question 3

What is the purpose of the AN/PEQ-15 laser aiming device?

Accepted Answer

Project visible and infrared laser beams for aiming and target designation

Answer

The AN/PEQ-15 projects both visible and infrared laser beams, enabling accurate aiming in day and night operations when used with night vision devices.

Question 4

Which malfunction is characterized by a round that fails to eject after firing, leaving the spent case in the chamber?

Accepted Answer

Stovepipe / failure to eject

Answer

A stovepipe malfunction occurs when the spent case fails to fully eject and is caught by the bolt carrier group, protruding from the ejection port.

Question 5

What distinguishes a hangfire from a misfire?

Accepted Answer

A hangfire has a delayed ignition after trigger pull; a misfire has no ignition

Answer

A hangfire involves a delayed but eventual firing of the round after trigger pull, while a misfire means the round fails to fire at all.

(FMF) Fleet Marine Force Practice Test

(FMF) Fleet Marine Force Practice Test

FMF Infantry Weapons Fundamentals 3