FMF - Fleet Marine Force Infantry Weapons Fundamentals Questions and Answers 1 — Questions and Answers
Question 1: Which of the following BEST describes the primary role of the M27 Infantry Automatic Rifle (IAR) within a Marine Corps fire team?
- To provide a high volume of suppressive fire similar to the M249 SAW.
- To serve as a precision marksman rifle for engaging targets at extreme ranges.
- To provide accurate, suppressive fire while maintaining maneuverability with the fire team. (Correct answer)
- To function as the primary breaching weapon for close-quarters combat.
Correct answer: To provide accurate, suppressive fire while maintaining maneuverability with the fire team.
The M27 IAR was adopted to provide accurate suppressive fire, an approach thought to be more effective than the high volume of less-accurate fire from the M249 SAW. Its lighter weight and similarities to the M4 carbine allow the automatic rifleman to keep pace with the rest of the fire team.
Question 2: A Marine is firing an M240B machine gun. The gun fires a long burst and then stops. The barrel is glowing red and emitting heat waves. What is the MOST critical immediate action the Marine should take?
- Immediately clear the weapon by pulling the charging handle to the rear.
- Wait for the barrel to cool completely before attempting any action.
- Pour water over the barrel to cool it down quickly.
- Wait approximately 15 minutes, keep the weapon pointed downrange, and then conduct a barrel change. (Correct answer)
Correct answer: Wait approximately 15 minutes, keep the weapon pointed downrange, and then conduct a barrel change.
A barrel that is glowing red indicates it is extremely hot (a 'hot barrel'). A hot barrel can cause a round to 'cook off,' meaning it fires without the trigger being pulled. The proper procedure is to wait for it to cool for a safe period, keeping it oriented in a safe direction, before attempting to change the barrel or clear the weapon.
Question 3: What are the four universal firearm safety rules that are fundamental to all Marine Corps weapons handling?
- 1. Keep weapon on safe. 2. Treat every weapon as if it were loaded. 3. Never point your weapon at an enemy until ordered. 4. Keep your finger off the trigger.
- 1. Treat, Never, Keep, Keep. 2. Always assume a weapon is unloaded. 3. Point the weapon only at approved targets. 4. Keep your finger on the trigger for a faster reaction.
- 1. Treat every weapon as if it were loaded. 2. Never point a weapon at anything you do not intend to shoot. 3. Keep your finger straight and off the trigger until you are ready to fire. 4. Keep the weapon on safe until you are ready to fire. (Correct answer)
- 1. Always keep the weapon pointed downrange. 2. Never load a weapon until you are on the firing line. 3. Keep your finger on the trigger guard. 4. Only handle your assigned weapon.
Correct answer: 1. Treat every weapon as if it were loaded. 2. Never point a weapon at anything you do not intend to shoot. 3. Keep your finger straight and off the trigger until you are ready to fire. 4. Keep the weapon on safe until you are ready to fire.
The four universal firearm safety rules are: 1. Treat every weapon as if it were loaded. 2. Never point a weapon at anything you do not intend to shoot. 3. Keep your finger straight and off the trigger until you are ready to fire. 4. Keep the weapon on safe until you are ready to fire. These rules are foundational to all weapons training and handling in the Marine Corps.
Question 4: During a live-fire range, a Marine's M4 Carbine fails to fire. The bolt is forward, and the ejection port cover is closed. According to the immediate action drill, what is the first step the Marine should take?
- Observe the chamber for a double feed.
- Slap upwards on the bottom of the magazine. (Correct answer)
- Pull the charging handle to the rear.
- Place the weapon on 'SAFE'.
Correct answer: Slap upwards on the bottom of the magazine.
The immediate action drill for a stoppage with the bolt forward is often remembered by the acronym 'TAP, RACK, BANG'. The first step, 'TAP,' involves slapping upward on the magazine to ensure it is properly seated, as a poorly seated magazine is a common cause of failure to feed.
Question 5: Which characteristic correctly describes the M240B medium machine gun?
- Fires from a closed-bolt position.
- Magazine-fed with a 30-round capacity.
- Gas-operated, air-cooled, and belt-fed. (Correct answer)
- Chambered in 5.56x45mm NATO.
Correct answer: Gas-operated, air-cooled, and belt-fed.
The M240B is a belt-fed, air-cooled, gas-operated, fully automatic machine gun that fires from the open-bolt position. It is chambered in 7.62x51mm NATO.
Question 6: A fire team is maneuvering through an urban environment. The fire team leader needs to provide suppressive fire on a second-story window 200 meters away to cover the team's movement across a street. Which weapon system is best suited for this task with the highest degree of precision?
- M320 Grenade Launcher
- M4 Carbine with iron sights
- M240B Machine Gun
- M27 IAR with Squad Day Optic (SDO) (Correct answer)
Correct answer: M27 IAR with Squad Day Optic (SDO)
The M27 IAR, equipped with the Squad Day Optic (SDO), is designed for precision fire and is more accurate than the M240B at the squad level for point suppression. The SDO provides magnification (3.5x), allowing for better target identification and engagement at 200 meters compared to iron sights or the area suppression focus of the M240B.
FMF - Fleet Marine Force Infantry Weapons Fundamentals Questions and Answers 1
Which of the following BEST describes the primary role of the M27 Infantry Automatic Rifle (IAR) within a Marine Corps fire team?