M4 Carbine Weapons Test

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| By Maiorano12
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1. What is the correct description of the M4 Carbine?

Explanation

The correct description of the M4 Carbine is that it is a light weight, gas operated, air cooled, magazine fed, shoulder fired weapon.

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About This Quiz
M4 Carbine Weapons Test - 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?

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?

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?

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?

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?

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?

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?

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?

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?

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?

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?

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?

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?

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?

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?

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?

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?

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?

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?

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?

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?

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?

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"?

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?

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"?

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?

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?

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?

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"?

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"?

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?

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?

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?

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"?

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"?

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?

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?

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?

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?

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?

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?

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?

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?

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?

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?

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?

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?

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?

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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50. What must the weapon and magazines be frequently inspected for in a hot, wet (jungle) climate?

Explanation

In a hot, wet jungle climate, the weapon and magazines are prone to corrosion due to the high humidity and moisture levels. Corrosion can cause damage to the metal parts, affecting their functionality and reliability. Therefore, frequent inspections are necessary to identify any signs of corrosion and take appropriate measures to prevent further damage.

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51. Under normal conditions, what is the proper method of lubricating the ejector?

Explanation

The proper method of lubricating the ejector under normal conditions is to apply a few drops of CLP to the ejector and then press down on the ejector several times to work the lubricant in. This ensures that the lubricant is evenly distributed and properly coats the ejector for optimal performance.

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52. As a minimum, what items must be contained in the M4 weapon cleaning kit?

Explanation

The M4 weapon cleaning kit must contain cleaning rod sections, cleaning rod handle, eyelet, small arms cleaning brush (toothbrush), bore brush, chamber brush, patches, cloth, pipe cleaners, and lubricant and/or CLP.

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53. What are the proper steps to "clearing" the M4 carbine?

Explanation

The proper steps to "clearing" the M4 carbine are to first place the selector lever on "Safe" if possible. Then, remove the magazine and lock the bolt to the rear. Next, check the chamber and ensure that the selector is on "Safe". Finally, let the bolt go forward. This sequence of steps ensures that the firearm is safely cleared and ready for storage or maintenance.

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54. What lubricant is also used to clean the M4 Carbine?

Explanation

CLP stands for Cleaner, Lubricant, and Protectant. It is a versatile lubricant that is commonly used to clean and maintain firearms, including the M4 Carbine. CLP not only lubricates the moving parts of the firearm but also helps to remove dirt, carbon buildup, and other contaminants. It also provides a protective coating to prevent rust and corrosion. Therefore, CLP is the appropriate lubricant to clean the M4 Carbine.

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55. Under arctic conditions, what action should be taken to prevent the M4 carbine from freezing up and becoming in-operable?

Explanation

To prevent the M4 carbine from freezing up and becoming inoperable under arctic conditions, the best action to take is to clear the weapon and hand cycle it every 30 minutes. This means removing any ice or snow buildup, checking for any malfunctions, and manually cycling the action to ensure it remains functional. This regular maintenance helps to prevent freezing and ensures the weapon remains operational in extreme cold temperatures.

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56. Under hot, wet (jungle) conditions, how should th M4 carbine be lubricated?

Explanation

In hot, wet jungle conditions, the M4 carbine should be cleaned and lubricated more frequently with LSA or CLP. This is because the high humidity and moisture in the jungle environment can cause the weapon to rust and malfunction. Regular cleaning and lubrication with LSA or CLP helps to prevent rust and keep the weapon functioning properly.

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57. The cycle of operation for the M4 Carbine is?

Explanation

The cycle of operation for the M4 Carbine begins with feeding, where a new round is loaded into the chamber. Then, the round is chambered, meaning it is positioned properly in the chamber ready to be fired. Next, the weapon locks, ensuring that the round is securely in place and the bolt is in the correct position. The firing stage comes next, where the round is discharged. After firing, the weapon unlocks, allowing the bolt to move back and start the extraction process. The extraction stage involves removing the spent casing from the chamber. Then, the casing is ejected from the weapon. Finally, the bolt is cocked back into the ready position for the next round to be fed into the chamber.

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58. What is the proper procedure for reloading the M4 carbine?

Explanation

The proper procedure for reloading the M4 carbine is to remove the empty magazine, insert a loaded magazine, and hit the bolt catch to close the bolt. Additionally, tapping the forward assist may be necessary to ensure the bolt is fully closed. This sequence of steps ensures that the weapon is ready to fire with a new magazine and the bolt is properly seated.

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59. When operating under normal conditions, how should the Gas Carrier Key be lubricated on the M4 Carbine?

Explanation

The correct answer is to place one drop of lubricant into the bolt carrier key. This is the appropriate method for lubricating the Gas Carrier Key on the M4 Carbine under normal conditions.

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60. What type of malfunction is considered "extremely serious" because of the hazard to the shooter?

Explanation

Failure to extract is considered "extremely serious" because it refers to the malfunction where the spent casing remains stuck in the chamber after firing. This can lead to a dangerous situation as the shooter may not be able to load a new round into the chamber, rendering the firearm inoperable. Additionally, attempting to fire another round with a stuck casing can result in a catastrophic failure, causing harm to the shooter and those nearby. It is crucial for a firearm to properly extract the spent casing to ensure safe and reliable operation.

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61. What item can be used to clean carbon from the back of the M4 carbine bolt assembly?

Explanation

The old worn bore brush and CLP can be used to clean carbon from the back of the M4 carbine bolt assembly. The bore brush is specifically designed to remove carbon buildup from the barrel, and even though it may be old and worn, it can still effectively clean the carbon from the bolt assembly. CLP (Cleaner, Lubricant, and Protectant) is a multipurpose cleaning solution that can dissolve carbon and other contaminants. Therefore, using an old worn bore brush along with CLP would be the most suitable option for cleaning carbon from the back of the M4 carbine bolt assembly.

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62. In a hot, dry (desert) climate, how should the M4 carbine be lubricated?

Explanation

In a hot, dry desert climate, the M4 carbine should be lightly lubricated on internal parts only using CLP or LSA. This is because excessive lubrication can attract dust and sand, leading to malfunctions and decreased performance. Light lubrication on internal parts helps to reduce friction and ensure smooth operation without compromising the weapon's functionality in the harsh desert environment.

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63. How many rounds fire continuously and rapidly through the M4 carbine can cause the weapon to heat up to the cook-off point?

Explanation

The correct answer is 140. Continuous and rapid firing can cause the M4 carbine to heat up to the cook-off point after firing approximately 140 rounds. This means that if the weapon is fired continuously and rapidly, without allowing it to cool down, it will reach a temperature where the ammunition inside can ignite spontaneously.

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64. When operating under normal conditions, how should the M4 carbine bolt assembly and cam pin be lubricated?

Explanation

The M4 carbine bolt assembly and cam pin should be lubricated generously with CLP or LSA when operating under normal conditions. This ensures smooth movement and proper functioning of the bolt assembly. CLP (Cleaner, Lubricant, and Preservative) and LSA (Lubricant, Small Arms) are commonly used lubricants for firearms. Applying a generous amount of lubricant helps to reduce friction, prevent wear and tear, and maintain the overall performance of the weapon.

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What is the correct description of the M4 Carbine?
Allowing the muzzle of your M4 carbine to sweep your partner while...
How many rounds can be loaded into the standard issue M4 carbine...
During cleaning and inspection of the M4 carbine, what items...
If you cannot remove a round from the "hot" chamber of...
When carrying the M4, which safety rule(s) apply?
While responding with your M4 carbine, you carry the weapon with your...
While responding to a building alarm with M4 carbine, you hear...
What acronym identifies the proper "immediate action"...
While applying Immediate action you observe a round in the chamber of...
What is the purpose of the compensator on the M4 carbine?
What 3 types of lubricrants are authorized for use on the M4 carbine?
In a hot, (desert) climate, what must be continually cleaned from the...
How can M855 ball ammunition be identified?
The M4 carbine has a maximum range of?
In hot, dry (desert) climate, how often should you clean your M4...
What rounds are standard duty issue for the M4 carbine?
If you pull the trigger and your M4 carbine fails to fire, what must...
You respond to a call of "shots fired" on the flight-line...
If after applying "immediate action" to your M4 carbine, it...
What are the steps to applying "immediate action" to the M4...
What caliber is the M4 Carbine?
What could happen if immediate action is applied and the M4 carbine is...
What is the definition of "Generously Lubricated"?
What must you do before switching lubricants on the M4 carbine?
What are the proper steps for applying "remedial action" to...
What should you do if you believe a bullet may be stuck in the barrel...
For operation under arctic conditions below -10 F, what lubricant must...
Can two different types of lubricant be used simultaneously on the M4...
What is the maximum effective range with the M4 carbine on a...
What is the maximum effective range with the M4 carbine on an...
What is the cyclic rate of fire for the M4 carbine?
What is the proper loading procedure for the M4 carbine for duty?
How soon should "immediate action" be applied to avoid...
What is the definition of a "Cook-Off"?
What is the definition of "Lightly Lubricated"?
Can M193 ball and M196 Tracer be safely fired in the M4 carbine?
What is the maximum effective rate of fire on "burst" for...
Loaded with a 30 round magazine, the M4 cabine weighs?
What is the sustained rate of fire for the M4 carbine?
In a hot, dry (desert) climate, what can you do to help keep dust and...
When operating under normal conditions, how should the M4 carbine...
Which statement is true about the characteristics of the M68 Close...
What is the maximum effective rate of fire on "semi" for the...
How is the chamber brush used to clean the M4 carbine chamber?
What item from your cleaning kit should be used to clean...
If you hear a "pop" or experience a noticeable change in...
What temperature ranges require you to use CLP or LSA on your M4...
When operating under normal conditions, how should the outside of the...
What must the weapon and magazines be frequently inspected for in a...
Under normal conditions, what is the proper method of lubricating the...
As a minimum, what items must be contained in the M4 weapon cleaning...
What are the proper steps to "clearing" the M4 carbine?
What lubricant is also used to clean the M4 Carbine?
Under arctic conditions, what action should be taken to prevent the M4...
Under hot, wet (jungle) conditions, how should th M4 carbine be...
The cycle of operation for the M4 Carbine is?
What is the proper procedure for reloading the M4 carbine?
When operating under normal conditions, how should the Gas Carrier Key...
What type of malfunction is considered "extremely serious"...
What item can be used to clean carbon from the back of the M4 carbine...
In a hot, dry (desert) climate, how should the M4 carbine be...
How many rounds fire continuously and rapidly through the M4 carbine...
When operating under normal conditions, how should the M4 carbine bolt...
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