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912th NCO/SOM Board 2019 > M4 - 5.56mm Semiautomatic Rifle > Flashcards

M4 - 5.56mm Semiautomatic Rifle Flashcards

1
Q

What is the FM concerning the M4 rifle?

A

FM 3-22.9

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2
Q

What is the purpose of a weaponeer?

A

Capable of simulating all BRM live fire scenarios without firing rounds

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3
Q

What is the first thing you should do when you handle a weapon?

A

Clear it

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4
Q

5 phases in Basic Rifle Marskmanship

A
  1. Preliminary Rifle Instruction
  2. Downrange Feedback
  3. Field Fire
  4. Advances rifle marksmanship
  5. Advances optics, laser and iron sights
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5
Q

4 fundamentals of marksmanship

A
  1. Steady Position
  2. Proper Aim( Sight Picture)
  3. Breathing
  4. Trigger Squeeze
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6
Q

During Preliminary Marksmanship Training(PMI), what are the only two positions taught?

A
  1. Individual foxhole supported

2. Basic prone supported

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7
Q

2 basic elements of the sight picture

A
  1. Sight alignment

2. Placing of the aiming point

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8
Q

The acronym SPORTS stands for

A

Slap, pull, observe, release, tap, shoot

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9
Q

What is remedial action?

A

Continuing effort to determine the cause for a stoppage or malfunction and try to clear it once identified

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10
Q

Proper procedure for applying remedial action with the M4

A
  1. Try to place the weapon on safe
  2. Remove the magazine
  3. Lock the bolt to the rear
  4. Place the weapon on safe if not already done
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11
Q

Proper procedure for applying immediate action with the M4

A
  1. Slap gently upward on the magazine
  2. Pull charging handle fully to the rear
  3. Observe the ejection of a live round or expended cartridge
  4. Release the charging handle
  5. Tap the forward assist
  6. Squeeze the trigger
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12
Q

Is SPORTS an immediate or remedial action?

A

Immediate action

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13
Q

What is immediate action?

A

Quickly applying a possible correction to reduce stoppage without performing troubleshooting procedures to determine actual cause

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14
Q

How many times should immediate action be applied to a weapon?

A

Once. If rifle still fails, apply remedial action

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15
Q

What is a malfunction?

A

Weapon ceasing to fire due to stoppage resulting from mechanical failure

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16
Q

Different categories of malfunctions for the M4 rifle

A
  1. Failure to feed, chamber or lock
  2. Failure to fire cartridge
  3. Failure to extract
  4. Failure to eject
17
Q

What is stoppage?

A

Failure of an automatic or semi auto firearm to complete the cycle of operation

18
Q

How do you clear a stoppage?

A

Apply immediate or remedial action

19
Q

Define Maximum Effective Range

A

Greatest distance at which a soldier may be expected to deliver a target hit

20
Q

What does CLP stand for?

A

Cleaner Lubricant Preservative

21
Q

Describe the M4 rifle

A

5.56mm, magazine fed, gas-operated, air cooled, semiauto or three round burst, hand held, shoulder fired weapon

22
Q

7 types of ammo that can be used with the M4 rifle?

A
  1. M193 - Ball
  2. M196 - Trace
  3. M199 - Dummy
  4. M200 - Blank
  5. M855 - Ball(Green Tip)
  6. M856 - Tracer(Red Tip)
  7. M862 - Short Range Training Ammunition( plastic with blue tip)
23
Q

Describe weights of the M4 rifle

A
  1. Without magazine and sling - 6.49 pounds
  2. With sling and loaded 20 round magazine - 7.19 pounds
  3. With sling and loaded 30 round magazine - 7.5 pounds
24
Q

Effective rates of fire for the M4 rifle

A
  1. Semiauto - 45 rounds/ minute
  2. Burst - 90 rounds/minute
  3. Sustained - 12-15 rounds/minute
25
Q

Muzzle velocity of the M4 rifle

A

2,970 feet per second

26
Q

Ranges of the M4 rifle

A

Max Range - 3,600 meters
Max Effective Range for a Point Target - 500 meters
Max Effective Range for an Area Target - 600 meters

27
Q

Describe the barrel rifling for the M4 rifle

A

Right hand twist 1/7

28
Q

Overall length of the M4

A

Buttstock closed - 29.75 inches

Buttstock open - 33.00 inches

29
Q

8 steps in the functioning of the M4 rifle

A
  1. Feeding
  2. Chambering
  3. Locking
  4. Firing
  5. Unlocking
  6. Extracting
  7. Ejecting
  8. Cocking
30
Q

Perform a functions check on the M4 rifle

A
  1. Weapon on safe. Pull the trigger to the rear and the hammer should not fall
  2. Weapon on semi. Pull trigger to the rear and hold. Pull charging handle to rear and release. Release the trigger and pull it to the rear again. Hammer should fall
  3. Weapon on burst. Pull charging handle to rear and release. Pull trigger to rear and hold. Hammer should fall. Pull charging handle to rear three times and release. Release trigger and pull to rear again. Hammer should fall

912th NCO/SOM Board 2019 (17 decks)

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