M4 Carbine Weapons Test

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  • 1/64 Questions

    What is the correct description of the M4 Carbine?

    • Light weight, gas operated, air cooled, magazine fed, shoulder fired weapon
    • Light weight, reciol operated, air cooled, magazine fed, hip fired weapon
    • Light weight, belt fed, blow back operated, hip fired weapon
    • Light weight, pump action, breech loaded, shoulder fired weapon
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About This Quiz

The M4 Carbine Weapons Test assesses knowledge on the specifications, ammunition types, and operational aspects of the M4 Carbine. It covers ammo identification, safe usage, and handling specifics, crucial for military training and awareness.

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  • 2. 

    Allowing the muzzle of your M4 carbine to sweep your partner while exiting your vehicle is a violation of weapon safety procedures?

    • True, never point the weapon at anything you don't intend to shoot

    • False, a round is not chambered so pointing at personnel is permissible

    Correct Answer
    A. True, never point the weapon at anything you don't intend to shoot
    Explanation
    The given answer is true because it is a basic weapon safety procedure to never point a weapon, in this case, the M4 carbine, at anything or anyone that you do not intend to shoot. This is to prevent any accidental discharge or harm to others. Therefore, allowing the muzzle of the carbine to sweep your partner while exiting a vehicle is a violation of this safety procedure.

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  • 3. 

    How many rounds can be loaded into the standard issue M4 carbine magazine?

    • 30

    • 28

    • 20

    • 15

    Correct Answer
    A. 30
    Explanation
    The correct answer is 30 because the standard issue M4 carbine magazine has a capacity of 30 rounds. This means that it can hold up to 30 bullets before needing to be reloaded.

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  • 4. 

    During cleaning and inspection of the M4 carbine, what items should you check on the barrel assembly?

    • Compensator looseness

    • Front sight post not bent

    • Gas tube not bent or cracked

    • All of the above

    Correct Answer
    A. All of the above
    Explanation
    During cleaning and inspection of the M4 carbine, it is important to check the barrel assembly for various issues. One of the items to check is the compensator looseness, as a loose compensator can affect the accuracy and performance of the firearm. Additionally, the front sight post should be checked to ensure it is not bent, as a bent sight post can also affect accuracy. Lastly, the gas tube should be inspected for any bends or cracks, as this can impact the functioning of the firearm. Therefore, all of the above items should be checked during the cleaning and inspection process.

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  • 5. 

    If you cannot remove a round from the "hot" chamber of your M4 carbine within 10 seconds, what action should you take?

    • Remove magazine, charge weapon and attempt to fire

    • Lock bolt to the rear and attempt to remove the round using your issue Multi-tool or pocket knife

    • Keep your face away from the ejection port, point weapon in a safe direction, remove the magazine and let weapon cool for 15 minutes

    • Close the ejection port cover, pour water on the weapon to cool it and wait 30 minutes.

    Correct Answer
    A. Keep your face away from the ejection port, point weapon in a safe direction, remove the magazine and let weapon cool for 15 minutes
    Explanation
    If you cannot remove a round from the "hot" chamber of your M4 carbine within 10 seconds, the appropriate action to take is to keep your face away from the ejection port, point the weapon in a safe direction, remove the magazine, and let the weapon cool for 15 minutes. This is the safest course of action to prevent any accidental discharge or injury.

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  • 6. 

    When carrying the M4, which safety rule(s) apply?

    • Treat all weapons as if loaded

    • Never point the weapon at anything or anyone you are not willing to shoot

    • Positively identify your target, know what is around and behind your target

    • Keep your finger OFF the trigger until your sights are on target

    • All of these are correct

    Correct Answer
    A. All of these are correct
    Explanation
    All of the safety rules mentioned apply when carrying the M4. Treating all weapons as if loaded ensures that proper precautions are taken at all times. Never pointing the weapon at anything or anyone you are not willing to shoot helps prevent accidental discharge. Positively identifying the target and being aware of what is around and behind it prevents unintended harm to bystanders. Keeping the finger off the trigger until the sights are on target ensures that the weapon is not fired accidentally. Therefore, all of these rules are correct and should be followed when carrying the M4.

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  • 7. 

    While responding with your M4 carbine, you carry the weapon with your finger on the trigger. Would this be a violation of weapon safety procedures?

    • Yes, it would be a violation of weapon safety procedures

    • No, it would not violate weapon safety procedures

    Correct Answer
    A. Yes, it would be a violation of weapon safety procedures
    Explanation
    Carrying a weapon with your finger on the trigger is considered a violation of weapon safety procedures. This is because it increases the risk of accidental discharge, especially in situations where the finger should be off the trigger until ready to fire. Keeping the finger on the trigger can result in unintentional firing and potential harm to oneself or others. Therefore, it is essential to adhere to weapon safety protocols by keeping the finger off the trigger until it is necessary to engage the target.

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  • 8. 

    While responding to a building alarm with M4 carbine, you hear movement in the bushes, aim your weapon at the bushes, give the command "Halt" and fire three rounds. Would your actions violate weapon safety procedures?

    • Yes, you failed to positevly identify the target

    • No, the person looked suspicious

    Correct Answer
    A. Yes, you failed to positevly identify the target
    Explanation
    The correct answer is "Yes, you failed to positively identify the target." In this scenario, the person in the bushes is not confirmed to be a threat or an intruder. Firing three rounds without positively identifying the target violates weapon safety procedures, as it poses a risk of causing harm to innocent individuals or property. It is important to always positively identify the target before taking any action with a weapon to ensure the safety of everyone involved.

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  • 9. 

    What acronym identifies the proper "immediate action" procedures for the M4 carbine?

    • LACE

    • SALUTE

    • SPORTS

    • TTFN

    Correct Answer
    A. SPORTS
    Explanation
    SPORTS is the acronym that identifies the proper "immediate action" procedures for the M4 carbine. These procedures are used when a malfunction occurs with the weapon. SPORTS stands for Slap, Pull, Observe, Release, Tap, and Shoot. Slap refers to slapping the magazine to ensure it is properly seated, Pull means pulling the charging handle to the rear to extract any stuck rounds, Observe involves observing the ejection of the round, Release involves releasing the charging handle, Tap means tapping the forward assist to ensure the bolt is fully forward, and Shoot means firing the weapon to continue engaging the target.

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  • 10. 

    While applying Immediate action you observe a round in the chamber of your M4 carbine and you suspect the weapon is hot enough to cause a cook-off, what action should you take?

    • Stare into the ejection port while charging the weapon for 10 seconds to see if round cooks off.

    • Keep your face away from the ejection port and remove the round fast. If you can't remove the round within 10 seconds, remove the magazine and let the weapon cool for 15 minutes

    • Remove magazine, charge weapon 3 times, reload and attempt to fire

    • Call Combat Arms

    Correct Answer
    A. Keep your face away from the ejection port and remove the round fast. If you can't remove the round within 10 seconds, remove the magazine and let the weapon cool for 15 minutes
    Explanation
    If you suspect that the weapon is hot enough to cause a cook-off, it is important to keep your face away from the ejection port to avoid any potential injury. The correct action is to remove the round quickly. If you are unable to remove the round within 10 seconds, the next step is to remove the magazine and allow the weapon to cool for 15 minutes. This will help prevent any potential accidents or injuries that could occur from a cook-off.

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  • 11. 

    What is the purpose of the compensator on the M4 carbine?

    • Helps keep the muzzle from rising during firing

    • Protects the muzzle from dirt

    • Increases muzzle flash when fired

    • Used to mount AN/PAQ-4C laser

    Correct Answer
    A. Helps keep the muzzle from rising during firing
    Explanation
    The compensator on the M4 carbine helps keep the muzzle from rising during firing. When a firearm is fired, the force of the expanding gases pushes the muzzle upward, causing recoil and making it harder to maintain accuracy. The compensator is designed to redirect some of those gases in a way that counteracts the upward force, reducing muzzle rise and making it easier for the shooter to stay on target. This improves overall stability and control during rapid or sustained fire.

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  • 12. 

    What 3 types of lubricrants are authorized for use on the M4 carbine?

    • CLP, LSA, LAW

    • CLP, LSA, RBC

    • CLP, LSA, Dry Cleaning Solvent

    • Militec, Hopped #9, LSAT

    Correct Answer
    A. CLP, LSA, LAW
    Explanation
    The correct answer is CLP, LSA, LAW. CLP stands for Cleaner, Lubricant, and Protectant, which is a multi-purpose lubricant commonly used on firearms. LSA stands for Lubricant, Semi-Fluid, Automatic Weapons, which is specifically designed for automatic weapons like the M4 carbine. LAW stands for Lubricant, Arctic Weapons, which is a lubricant specifically formulated for use in cold weather conditions. These three lubricants are authorized for use on the M4 carbine to ensure proper functioning and maintenance of the firearm.

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  • 13. 

    In a hot, (desert) climate, what must be continually cleaned from the weapon to prevent stoppages?

    • Moisture

    • Rust

    • Fingerprints

    • Sand, fine dust

    Correct Answer
    A. Sand, fine dust
    Explanation
    In a hot, desert climate, sand and fine dust are likely to be present in abundance. These particles can easily enter the weapon and cause stoppages by clogging the mechanisms or interfering with the moving parts. Therefore, it is crucial to continually clean the weapon to remove the sand and fine dust and prevent any potential stoppages.

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  • 14. 

    How can M855 ball ammunition be identified?

    • Copper jacketed projectile with green tip

    • Fluted case

    • Violet colored tip

    • Copper jacketed projectile

    Correct Answer
    A. Copper jacketed projectile with green tip
    Explanation
    M855 ball ammunition can be identified by its copper jacketed projectile with a green tip. This specific combination of features distinguishes it from other types of ammunition. The copper jacketed projectile refers to the outer covering of the bullet, which is made of copper. The green tip indicates that it is M855 ammunition, as different types of ammunition can have different colored tips for identification purposes. Therefore, the presence of a copper jacketed projectile with a green tip is the key characteristic that allows for the identification of M855 ball ammunition.

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  • 15. 

    The M4 carbine has a maximum range of?

    • 3600 m

    • 2653 m

    • 1 Kilometer

    • 500 m

    Correct Answer
    A. 3600 m
    Explanation
    The M4 carbine has a maximum range of 3600 m. This means that the firearm is capable of accurately hitting a target up to a distance of 3600 meters. This range is quite impressive for a carbine, as it allows for effective engagement of targets at long distances. This extended range can be attributed to the design and capabilities of the M4 carbine, such as its barrel length and ammunition.

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  • 16. 

    In hot, dry (desert) climate, how often should you clean your M4 Carbine?

    • Daily or as soon as possible after firing

    • Every 30 minutes

    • When you can spread the dust around with your finger

    • When your supervisor tells you to

    Correct Answer
    A. Daily or as soon as possible after firing
    Explanation
    In a hot, dry desert climate, the M4 Carbine is more prone to dust and sand accumulation, which can affect its performance. Therefore, it is necessary to clean the M4 Carbine daily or as soon as possible after firing to prevent any damage caused by the dust and to maintain its functionality in such harsh conditions.

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  • 17. 

    What rounds are standard duty issue for the M4 carbine?

    • M855 Ball / M856 Tracer

    • M193 Ball / M196 Tracer

    • M200 Blank / M199 Dummy

    • M80 Ball / M406 Tracer

    Correct Answer
    A. M855 Ball / M856 Tracer
    Explanation
    The M4 carbine is typically issued with M855 Ball and M856 Tracer rounds. The M855 Ball round is a standard 5.56mm NATO round used by the United States military. It is known for its penetration capabilities and is commonly used for general-purpose shooting. The M856 Tracer round, on the other hand, is used for observation of fire, signaling, and incendiary purposes. Tracer rounds have a pyrotechnic charge that ignites upon firing, making the projectile visible during flight. Together, the M855 Ball and M856 Tracer rounds provide a versatile ammunition combination for the M4 carbine.

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  • 18. 

    If you pull the trigger and your M4 carbine fails to fire, what must you do?

    • Keep the weapon pointed in a safe direction, raise your firing hand and wait for help

    • Execute a rapid reload, and continue to fire

    • Clear your weapon, detail strip and inspect parts for chips, cracks, and burrs

    • Quickly apply immediate action procedures

    Correct Answer
    A. Quickly apply immediate action procedures
    Explanation
    If you pull the trigger and your M4 carbine fails to fire, you should quickly apply immediate action procedures. This means that you should first keep the weapon pointed in a safe direction to prevent any accidental discharge. Then, you need to quickly perform a series of actions to clear any potential malfunctions, such as tap, rack, and reassess. This procedure is designed to quickly address common issues and get the weapon back into a firing condition as soon as possible.

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  • 19. 

    You respond to a call of "shots fired" on the flight-line during the annual air show. On arrival you observe an armed individual in the crowd of people who points a weapon at you so you immmediately fire 5 rounds at the individual without regard for bystanders. Would your actions violate weapon safety procedures?

    • Yes, because you did not consider the safety of other bystanders around and behind the target

    • No, because the individual pointed a weapon at you

    Correct Answer
    A. Yes, because you did not consider the safety of other bystanders around and behind the target
    Explanation
    The correct answer is yes, because you did not consider the safety of other bystanders around and behind the target. In this scenario, the individual pointed a weapon at you, which may have justified the use of force to protect yourself. However, it is important to always prioritize the safety of innocent bystanders. Firing without regard for bystanders puts them at risk and violates weapon safety procedures. In such situations, it is crucial to assess the surroundings and take appropriate measures to minimize collateral damage.

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  • 20. 

    If after applying "immediate action" to your M4 carbine, it still fails to fire, what action should be taken?

    • Wait 15 minutes, disassemble and inspect parts for breakage

    • Retrieve CDCs and follow instructions listed

    • Apply "remedial actions" procedures

    • Report the situation to your supervisor or control center

    Correct Answer
    A. Apply "remedial actions" procedures
    Explanation
    If after applying "immediate action" to your M4 carbine, it still fails to fire, the appropriate action to take is to apply "remedial actions" procedures. This means following the prescribed steps or protocols to troubleshoot and fix the issue with the firearm. It could involve checking for any obstructions, ensuring the magazine is properly seated, clearing any malfunctions, or seeking further assistance if necessary. This step is crucial in attempting to resolve the problem before escalating it to a supervisor or control center.

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  • 21. 

    What are the steps to applying "immediate action" to the M4 carbine?

    • Tap upward on bottom of magazine, charge weapon, attempt to fire

    • Clear weapon, charge weapon 3 times, reload, attempt to fire

    • Slap upward on the bottom of the magazine, pull charging handle to rear, observe for ejection of round or empty case, ensure chamber is clear, release charging handle, tap forward assist, squeeze trigger to shoot

    • Slap side of magazine to seat rounds, charge weapon, tap forward assist, attempt to fire

    Correct Answer
    A. Slap upward on the bottom of the magazine, pull charging handle to rear, observe for ejection of round or empty case, ensure chamber is clear, release charging handle, tap forward assist, squeeze trigger to shoot
    Explanation
    The correct answer explains the steps to applying "immediate action" to the M4 carbine. It involves slapping upward on the bottom of the magazine, pulling the charging handle to the rear, observing for ejection of a round or empty case, ensuring the chamber is clear, releasing the charging handle, tapping the forward assist, and finally squeezing the trigger to shoot. These steps are necessary to quickly address any malfunctions or issues with the weapon and ensure it is ready to fire.

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  • 22. 

    What caliber is the M4 Carbine?

    • 7.62 mm NATO

    • .223 Remington

    • 5.56 NATO

    • 5.56mm X 39mm

    Correct Answer
    A. 5.56 NATO
    Explanation
    The M4 Carbine is chambered in 5.56 NATO. This is the correct answer because the M4 Carbine is a standard issue firearm for the United States military, and it is well-known that it uses the 5.56 NATO caliber.

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  • 23. 

    What could happen if immediate action is applied and the M4 carbine is fired with a bullet stuck in the barrel?

    • The barrel could melt cause damage to the weapon

    • The weapon could explode resulting in damage to the weapon and injury or death to the shooter or others

    • The round could cook-off

    • Ammunition could be damaged to the point it would have to be turned in

    Correct Answer
    A. The weapon could explode resulting in damage to the weapon and injury or death to the shooter or others
    Explanation
    If immediate action is applied and the M4 carbine is fired with a bullet stuck in the barrel, the weapon could explode. This would not only cause damage to the weapon but also pose a significant risk of injury or even death to the shooter or others in the vicinity.

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  • 24. 

    What is the definition of "Generously Lubricated"?

    • Barely visible to the eye

    • Enough to be spread with a finger

    • Dripping wet

    • Not visible to the eye

    Correct Answer
    A. Enough to be spread with a finger
    Explanation
    The definition of "Generously Lubricated" is when there is enough lubrication present to be easily spread with a finger. This implies that there is a sufficient amount of lubricant to facilitate smooth movement or reduce friction. It suggests a moderate to high level of lubrication, but not to the extent of being dripping wet.

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  • 25. 

    What must you do before switching lubricants on the M4 carbine?

    • Thoroughly clean the weapon with a pressure washer

    • Completely remove the old lubricant

    • Clean the weapon with gasoline

    • Wipe the weapon down with a soft clean cloth

    Correct Answer
    A. Completely remove the old lubricant
    Explanation
    Before switching lubricants on the M4 carbine, it is important to completely remove the old lubricant. This is necessary to ensure that there is no residue or contamination from the previous lubricant, which could potentially affect the performance and functionality of the weapon. By thoroughly removing the old lubricant, the M4 carbine can be properly cleaned and prepared for the application of the new lubricant, ensuring optimal operation and maintenance.

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  • 26. 

    What are the proper steps for applying "remedial action" to the M4 carbine with a "failure to feed"?

    • Clear weapon, remove jammed rounds, reload and attempt to fire

    • Execute a tactical relaod, charge weapon and attempt to fire

    • Disassemble weapon and apply operator maintenance

    • Inspect magazine to ensure rounds are seated

    Correct Answer
    A. Clear weapon, remove jammed rounds, reload and attempt to fire
    Explanation
    The proper steps for applying "remedial action" to the M4 carbine with a "failure to feed" are to clear the weapon, remove any jammed rounds, reload the weapon, and then attempt to fire it. This sequence of actions is necessary to address the issue and ensure that the weapon functions properly.

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  • 27. 

    What should you do if you believe a bullet may be stuck in the barrel of your M4 carbine?

    • Clear the weapon, open the receivers, remove the bolt carrier group and inspect the barrel for obstruction

    • Use your cleaning rod to pust the stuck bullet out of the barrel

    • Load another ound into the weapon and fire it to force the stuck bullet out of the barrel

    • Contact your supervisor or control center

    Correct Answer
    A. Clear the weapon, open the receivers, remove the bolt carrier group and inspect the barrel for obstruction
    Explanation
    If you believe a bullet may be stuck in the barrel of your M4 carbine, the correct action to take is to clear the weapon, open the receivers, remove the bolt carrier group, and inspect the barrel for obstruction. This is the safest and most effective way to address the potential issue and ensure the firearm is in proper working condition.

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  • 28. 

    For operation under arctic conditions below -10 F, what lubricant must be used on the M4 carbine?

    • CLP

    • LSA

    • LAW

    • 10W30 synthetic

    Correct Answer
    A. LAW
    Explanation
    The correct lubricant to be used on the M4 carbine for operation under arctic conditions below -10 F is LAW.

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  • 29. 

    Can two different types of lubricant be used simultaneously on the M4 carbine?

    • Yes

    • No

    Correct Answer
    A. No
    Explanation
    No, two different types of lubricant should not be used simultaneously on the M4 carbine. Mixing different types of lubricants can lead to chemical reactions or inconsistencies in performance, potentially causing damage to the firearm or reducing its effectiveness. It is recommended to use a single type of lubricant that is suitable for the M4 carbine.

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  • 30. 

    What is the maximum effective range with the M4 carbine on a "point target"?

    • 500 m

    • 550 m

    • 600 m

    • 3600 m

    Correct Answer
    A. 500 m
    Explanation
    The maximum effective range with the M4 carbine on a "point target" is 500 m. This means that the M4 carbine is designed to accurately hit a specific point target up to a distance of 500 meters. Beyond this range, the accuracy and effectiveness of the weapon may significantly decrease.

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  • 31. 

    What is the maximum effective range with the M4 carbine on an "area target"?

    • 500 m

    • 550 m

    • 600 m

    • 3600 m

    Correct Answer
    A. 600 m
    Explanation
    The maximum effective range with the M4 carbine on an "area target" is 600 m. This means that the weapon is capable of accurately engaging and hitting targets within a 600-meter radius. This range allows for effective engagement of multiple targets in a given area, making it a versatile weapon for various combat situations.

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  • 32. 

    What is the cyclic rate of fire for the M4 carbine?

    • 12 - 15 rpm

    • 45 rpm

    • 700 - 970 rpm

    • 90 rpm

    Correct Answer
    A. 700 - 970 rpm
    Explanation
    The cyclic rate of fire for the M4 carbine is 700 - 970 rpm. This means that the firearm is capable of firing between 700 and 970 rounds per minute. This high rate of fire allows for rapid and continuous shooting, making the M4 carbine an effective weapon in combat situations.

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  • 33. 

    What is the proper loading procedure for the M4 carbine for duty?

    • Verify weapon clear, insert magazine, close bolt, tap forward assist, ensure selector on "semi"

    • Verify weapon clear, selector to "safe", close bolt, close ejection port cover, press trigger (hammer should not fall), insert magazine (if authorized), ensure selector on "safe"

    • Remove empty magazine, insert loaded magazine, close bolt, ensure selector to "safe"

    • Verify weapon clear, close bolt, insert magazine, ensure selector on "safe, charge weapon

    Correct Answer
    A. Verify weapon clear, selector to "safe", close bolt, close ejection port cover, press trigger (hammer should not fall), insert magazine (if authorized), ensure selector on "safe"
    Explanation
    The proper loading procedure for the M4 carbine for duty is to first verify that the weapon is clear, then move the selector to "safe", close the bolt, close the ejection port cover, and press the trigger to ensure that the hammer does not fall. If authorized, the magazine should then be inserted, and the selector should be returned to "safe". This sequence ensures that the weapon is safely loaded and ready for use in a duty situation.

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  • 34. 

    How soon should "immediate action" be applied to avoid possible cook-off of a round?

    • Within 15 seconds

    • Within 1 second

    • Within 30 seconds

    • Within 10 seconds

    Correct Answer
    A. Within 10 seconds
    Explanation
    "Immediate action" should be applied within 10 seconds to avoid possible cook-off of a round. This suggests that there is a risk of the round exploding or firing if action is not taken within this timeframe. Taking action within 10 seconds is crucial to prevent any potential accidents or harm.

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  • 35. 

    What is the definition of a "Cook-Off"?

    • When a round self detonates from heat buildup in a weapons chamber

    • A delayed detonation of the round after the trigger has been pressed

    • A live round that has been ejected detonates after striking a rock or hard surface

    • A round that fails to fire after immediate action has been applied

    Correct Answer
    A. When a round self detonates from heat buildup in a weapons chamber
    Explanation
    A "Cook-Off" refers to a situation where a round of ammunition detonates spontaneously due to the high temperature and heat buildup in the chamber of a weapon. This can occur when the weapon has been fired rapidly, causing the chamber to become extremely hot. The heat can then cause the propellant in the round to ignite, leading to an unintended explosion.

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  • 36. 

    What is the definition of "Lightly Lubricated"?

    • Barely visible to the eye

    • Enough to be spread with a finger

    • Dripping wet

    • Not visible to the eye

    Correct Answer
    A. Barely visible to the eye
    Explanation
    The definition of "Lightly Lubricated" is when something is barely visible to the eye. This means that there is a small amount of lubrication present, but it is not excessive or dripping wet. It is enough to provide some lubrication, but not so much that it is easily noticeable.

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  • 37. 

    Can M193 ball and M196 Tracer be safely fired in the M4 carbine?

    • Yes

    • No

    Correct Answer
    A. Yes
    Explanation
    Yes, M193 ball and M196 Tracer can be safely fired in the M4 carbine. Both types of ammunition are compatible with the M4 carbine and are commonly used in military and law enforcement applications. The M4 carbine is designed to handle a variety of ammunition types, including ball and tracer rounds, without any safety concerns. Therefore, it is safe to fire M193 ball and M196 Tracer in the M4 carbine.

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  • 38. 

    What is the maximum effective rate of fire on "burst" for the M4 carbine?

    • 700 - 970 rpm

    • 12 - 15 rpm

    • 45 rpm

    • 90 rpm

    Correct Answer
    A. 90 rpm
    Explanation
    The maximum effective rate of fire on "burst" for the M4 carbine is 90 rpm. This means that the firearm can fire a maximum of 90 rounds per minute when set to the burst mode. This rate of fire allows for controlled and accurate bursts of fire, making it suitable for engaging targets at medium ranges.

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  • 39. 

    Loaded with a 30 round magazine, the M4 cabine weighs?

    • 7.5 lbs

    • 8.79 lbs

    • 6 lbs

    • 6.49 lbs

    Correct Answer
    A. 7.5 lbs
    Explanation
    The M4 carbine weighs 7.5 lbs when loaded with a 30 round magazine.

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  • 40. 

    What is the sustained rate of fire for the M4 carbine?

    • 12 - 15 rpm

    • 45 rpm

    • 90 rpm

    • 700 - 970 rpm

    Correct Answer
    A. 12 - 15 rpm
    Explanation
    The sustained rate of fire for the M4 carbine is 12 - 15 rounds per minute. This means that the weapon is designed to be fired continuously at a rate of 12 to 15 rounds per minute without overheating or causing excessive wear on the barrel. This rate of fire allows for controlled and accurate shooting while maintaining the weapon's effectiveness and reliability.

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  • 41. 

    In a hot, dry (desert) climate, what can you do to help keep dust and sand out of your M4 carbine?

    • Use muzzle cap, keep ejection port closed, keep magazine installed, use protective bag

    • Clean weapon and magazines frequently

    • Both; Use muzzle cap, keep ejecion port closed, keep magazine installed, use protective bag, and clean weaopn and magazines frequently

    • Generously lubricate all surfaces with CLP

    Correct Answer
    A. Both; Use muzzle cap, keep ejecion port closed, keep magazine installed, use protective bag, and clean weaopn and magazines frequently
    Explanation
    In a hot, dry desert climate, using a muzzle cap, keeping the ejection port closed, keeping the magazine installed, using a protective bag, and cleaning the weapon and magazines frequently can help keep dust and sand out of the M4 carbine. The muzzle cap prevents debris from entering the barrel, keeping the ejection port closed prevents dust from entering the weapon, keeping the magazine installed prevents dust from entering through the magazine well, and using a protective bag provides an extra layer of protection. Cleaning the weapon and magazines frequently helps remove any accumulated dust and sand, ensuring the proper functioning of the carbine.

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  • 42. 

    When operating under normal conditions, how should the M4 carbine front sight post be lubricated?

    • Lightly lubricated with CLP, then turned 5 times clockwise

    • Lightly lubricated with LSA, then turned 5 times counter-clockwise

    • One drop of CLP or LSA onto the front sight post detent pin

    • 4 drops of lubrication is required, one drop in each notch

    Correct Answer
    A. One drop of CLP or LSA onto the front sight post detent pin
    Explanation
    The correct answer states that when operating under normal conditions, one drop of CLP or LSA should be applied onto the front sight post detent pin. This indicates that only a small amount of lubrication is necessary for the front sight post, specifically on the detent pin.

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  • 43. 

    Which statement is true about the characteristics of the M68 Close Combat Optic?

    • Magnifies the target to make it appear up to 4 times closer

    • Projects a laser beam onto the target

    • Does not require the red aiming dot to be aligned in the center of the scope

    • Is not effective for aiming beyond 75 m

    Correct Answer
    A. Does not require the red aiming dot to be aligned in the center of the scope
    Explanation
    The M68 Close Combat Optic does not require the red aiming dot to be aligned in the center of the scope. This means that the shooter can still aim accurately even if the red dot is slightly off-center. This feature provides flexibility and ease of use in close combat situations where quick target acquisition is crucial.

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  • 44. 

    What is the maximum effective rate of fire on "semi" for the M4 carbine?

    • 700 - 970 rpm

    • 12 - 15 rpm

    • 45 rpm

    • 90 rpm

    Correct Answer
    A. 45 rpm
    Explanation
    The correct answer is 45 rpm. This means that the M4 carbine can fire a maximum of 45 rounds per minute when set on the "semi" firing mode. This rate of fire is relatively low compared to the other options provided.

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  • 45. 

    How is the chamber brush used to clean the M4 carbine chamber?

    • Attach to cleaning rod handle, execute plunging and turning strokes

    • Attach to cleaning rod, execute turning strokes

    • Attach to cleaning rod handle, execute 30 turning strokes

    • Attach to cleaning rod handle, execute 30 plunging strokes

    Correct Answer
    A. Attach to cleaning rod handle, execute plunging and turning strokes
    Explanation
    The chamber brush is used to clean the M4 carbine chamber by attaching it to the cleaning rod handle and then executing plunging and turning strokes. This action helps to remove any dirt, debris, or residue that may have accumulated in the chamber of the carbine. By attaching the brush to the cleaning rod handle, it allows for better control and maneuverability while cleaning. The combination of plunging and turning strokes ensures a thorough cleaning of the chamber, helping to maintain the functionality and reliability of the M4 carbine.

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  • 46. 

    What item from your cleaning kit should be used to clean the firing pin hole in the bolt of the M4 carbine?

    • Worn bore brush

    • Chamber brush

    • Patch and firing pin

    • Pipe cleaner

    Correct Answer
    A. Pipe cleaner
    Explanation
    A pipe cleaner should be used to clean the firing pin hole in the bolt of the M4 carbine. Pipe cleaners are thin and flexible, making them ideal for reaching into small and narrow spaces. They can effectively remove dirt, debris, and residue that may accumulate in the firing pin hole, ensuring proper functioning of the firearm.

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  • 47. 

    If you hear a "pop" or experience a noticeable change in felt recoil while firing th M4 carbine, what should you do?

    • Apply "immediate action" within 10 seconds

    • Apply "remedial action" within 10 seconds

    • Do Not apply "immediate action", sop firing immediately because a bullet could be stuck in the barrel

    • Apply "SPORTS" within 10 seconds to remove the bullet stuck in the barrel

    Correct Answer
    A. Do Not apply "immediate action", sop firing immediately because a bullet could be stuck in the barrel
    Explanation
    If you hear a "pop" or experience a noticeable change in felt recoil while firing the M4 carbine, you should immediately stop firing because a bullet could be stuck in the barrel. Applying "immediate action" or "remedial action" within 10 seconds could potentially cause further damage or injury. It is important to prioritize safety and properly assess the situation before taking any action.

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  • 48. 

    What temperature ranges require you to use CLP or LSA on your M4 Carbine?

    • -10 C and above

    • 32 F to 120 F

    • -10 F and below

    • -10 F and above

    Correct Answer
    A. -10 F and above
    Explanation
    The correct answer is -10 F and above. This temperature range indicates that the M4 Carbine can be used in temperatures below -10 degrees Fahrenheit as well as temperatures above -10 degrees Fahrenheit. CLP (Cleaner, Lubricant, and Preservative) or LSA (Weapon Lubricant, Semi-fluid) are necessary to ensure proper functioning and maintenance of the firearm within this temperature range.

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  • 49. 

    When operating under normal conditions, how should the outside of the M4 carbine barrel assembly be lubricated?

    • Lightly with LAW or LSA

    • Lightly with CLP or LSA

    • Generously with CLP or LSA

    • Generously with CLP or LAW

    Correct Answer
    A. Lightly with CLP or LSA
    Explanation
    The outside of the M4 carbine barrel assembly should be lightly lubricated with CLP or LSA when operating under normal conditions. CLP (Cleaner, Lubricant, and Protectant) and LSA (Lubricant, Small Arms) are both commonly used lubricants for firearms. Applying a light amount of lubricant helps to reduce friction and prevent corrosion without causing excessive buildup or attracting dirt and debris. This ensures smooth operation and longevity of the weapon.

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Quiz Review Timeline (Updated): Mar 21, 2023 +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Mar 21, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Feb 16, 2012
    Quiz Created by
    Maiorano12

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