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Weapons > M4 > Flashcards

M4 Flashcards

1
Q

What caliber is the M4?

A

5.56 mm NATO

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2
Q

What rounds are a standard duty issue for the M4?

A

M855 ball & M856 tracer

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3
Q

Can M193 & M196 tracer be safely fired in the M4 carbine?

A

Yes

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4
Q

How can M855 ball ammunition be identified?

A

Copper jacketed projectile with green tip

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5
Q

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

A

30

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6
Q

How much does an M4 weight with a load 30 round magazine?

A

7.5 pounds

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7
Q

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

A

Keep the muzzle from rising when firing

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8
Q

What is the correct description of M4 carbine?

A

Light weight, gas operated, air cooled, magazine fed, shoulder fired

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9
Q

The cycle of operation for the M4 is?

A

Feeding, clambering, locking, firing, unblocking, extracting, ejecting, cocking

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10
Q

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

A

500m

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11
Q

What’s is the maximum effective range with the M4 carbine on an “area target”?

A

600M

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12
Q

What is the maximum effective rate of fire on “Semi” for the M4 carbine?

A

45 rounds per min

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13
Q

What is the maximum effective rate of fire on “Burst” for the M4 carbine?

A

90 rounds per min

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14
Q

The M4 carbine has a maximum range of?

A

3600 m

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15
Q

What is the cyclic rate of fire for the M4?

A

700-970

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16
Q

What is the sustained rate of fire for the M4?

A

12-15 rounds per min

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17
Q

What are the steps to clearing the M4?

A

Safe, remove magazine, lock bolt to the rear, check chamber, safe, let bolt go forward

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18
Q

What is the proper loading procedure for the M4?

A

Verify weapon is clear, safe, let the bolt go forward, close the ejection port, press the trigger, insert magazine, safe

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19
Q

What is the proper reloading procedure?

A

Remove magazine, insert loaded magazine, release the bolt, tap forward assist

20
Q

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

A

Apply immediate action procedure

21
Q

What acronym identifies the proper immediate actions procedures for the M4?

A 
S- slap magazine 
P- pull charging handle
O- observer chamber 
R- release charging handle 
T- tap forward assist 
S- shoot
22
Q

How soon should immediate actions be applied?

A

Within 10 seconds

23
Q

How many rounds fired continuously and rapidly through the M4 can cause a cook off?

A

140

24
Q

After applying immediate action your M4 still fails to fire what action should be taken?

A

Remedial actions

25
Q

What are the proper steps for applying remedial actions?

A

Clear weapon, remove jammed rounds, reload and attempt to refire

26
Q

While applying immediate actions you observe a round in the chamber of your M4 carbine and you suspect the weapon is not hot enough to cook off, what action should you take?

A

Keep your face away from the ejection port and remove round fast.

If you can’t remove within 10 sec let weapon cool for 15 mins

27
Q

If you can’t remove hot round from chamber of your M4 within 10 seconds what should you do?

A

Keep face away from ejection port, point weapon in safe direction, remove magazine, and let it cool down for 15 mins.

28
Q

What is the definition of a cook off?

A

A round self detonates from heat buildup of the weapons chamber

29
Q

If you here a POP or experience a noticeable change in felt recoil while firing the M4 what should you do?

A

Stop firing bullet may be stuck in barrel

30
Q

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

A

Weapon could explode resulting in damage to the weapon or injury of person

31
Q

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

A

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

32
Q

What type of malfunction is considered “extremely serious” because of hazard to the shooter?

A

Failure to extract

33
Q

What 3 types of lubricants are authorized for use of M4 carbine?

A

CLP, LSA, LAW

34
Q

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

A

-10 F or above

35
Q

For temperatures under -10F what lubricant should you use on your M4?

A

LAW

36
Q

Can you use two types of lubricants simultaneously on the M4?

A

No

37
Q

What is the definition of “lightly lubricant”

A

Barley visible to the eye

38
Q

What is the definition of “generously lubricant”?

A

Enough to spend with a finger

39
Q

What must you do before switching lubricants on the M4?

A

Completely remove old lubricant

40
Q

Under attic conditions what action should be taken to prevent the M4 from freezing up?

A

Clear weapon and hand cycle the weapon every 30 mins

41
Q

Under hot or wet conditions how should the M4 be lubricated?

A

Clean and lubricant more frequently with CLP and LSA

42
Q

What must weapons and magazines be frequently inspected for in hot and wet climate?

A

Corrosion

43
Q

In hot and dry climate how should the M4 be lubricated?

A

Lightly lubricate internal parts only using CLP and LSA

44
Q

I’m hot and dry climate must be continually cleaned from the weapon to prevent stoppages?

A

Sand and fine dust.

45
Q

In hot and dry climate how often should you clean your M4?

A

Daily or as soon as possible after firing weapon

46
Q

In hot and dry climate what can you do to help keep dust and sand out of your M4?

A

Use muzzle cap, keep ejection port closed,keep magazine installed, use protective bag, clean weapon and magazine frequently

Weapons (2 decks)

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