M4 - 5.56 mm Semiautomatic Rifle

Question 1

What is the FM concerning the M4 Rifle?

Answer 1

FM 3-22.9

Question 2

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

Answer 2

Make sure you clear it

Question 3

Name the five phases in Basic Rifle Marksmanship

Answer 3

Preliminary Rifle Instruction
Downrange Feedback
Field Fire
Advanced Rifle Marksmanship
Advanced Optics, Laser and Iron Sights

Question 4

What is the purpose of a weaponeer?

Answer 4

The weaponeer is capable of simulating all of the BRM live fire scenarios without firing
rounds. Immediate feedback is available for critiquing the soldier’s application of the
integrated act offering while using the weaponeer device to include misfire procedures.
(FM 3-22.9 Apr 2003 / 4-8 / PDF 84)

Question 5

What are the four fundamentals of marksmanship?

Answer 5

Steady Position
Proper Aim (Sight Picture)
Breathing
Trigger Squeeze
(FM 3-22.9 Apr 2003 / 4-5 / PDF 76)

Question 6

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

Answer 6

Individual Foxhole supported
Basic Prone unsupported
(FM 3-22.9 Apr 2003 / 4-6 / PDF 82)

Question 7

What are the two basic elements of the Sight Picture?

Answer 7

Sight Alignment
Placing of the Aiming Point
(FM 3-22.9 Apr 2003 / 4-5 / PDF 79)

Question 8

What does the acronym SPORTS stand for?

Answer 8

Slap, Pull, Observe, Release, Tap and Shoot (FM 3-22.9 Apr 2003 / 3-1 / PDF 57)

Question 9

What is remedial action?

Answer 9

Remedial action is the continuing effort to determine the cause for a stoppage ormal
function and to try to clear the stoppage once it has been identified.
(FM 3-22.9 Apr 2003 / 3-1 / PDF 57)

Question 10

Describe the proper procedures for applying remedial action with the M4.

Answer 10

Try to place the weapon on safe
Remove the magazine
Lock the bolt to the rear
Place the weapon on safe if not already done
(FM 3-22.9 Apr 2003 / 3-1 / PDF 57)

Question 11

Describe the proper procedure for applying immediate action with the M4.

Answer 11

Slaps gently upward on the magazine to ensure it is fully seated, and the magazine
follower is not jammed.
Pulls the charging handle fully to the rear.
Observes for the ejection of a live round or expended cartridge. (If the weapon fails to
eject a cartridge, perform remedial action.)
Releases the charging handle (do not ride it forward).
Taps the forward assist assembly to ensure bolt closure.
Squeezes the trigger and tries to fire the rifle.
(FM 3-22.9 Apr 2003 / 3-1 / PDF 57)

Question 12

What are the steps required in order to mechanically zero the M4?

Answer 12

Adjust the front sight post (1) up or down until the base of the front sight post is flush
with the front sight post housing (2).
Adjust the elevation knob (3) counterclockwise, when viewed from above, until the
rear sight assembly (4) rests flush with the detachable carrying handle and the
6/3marking is aligned with the index line (5) on the left side of the carrying handle.
Position the apertures(6) so the unmarked aperture is up and the 0-200 meter aperture
is down. Rotate the windage knob (7) to align the index mark (8) on the 0-200 meter
aperture with the long center index line on the rear sight assembly.
(FM 3-22.9 Apr 2003 / 2-1 / PDF 34)

Question 13

What are the steps required in order to battle sight zero the M4?

Answer 13

Adjust the elevation knob (1) counterclockwise, when viewed from above, until the
rear sight assembly (2) rests flush with the detachable carrying handle and the
6/3marking is aligned with the index line (3) on the left side of the detachable carrying
handle. The elevation knob remains flush.
Position the apertures(4) so the unmarked aperture is up and the 0-200 meter aperture
is down. Rotate the windage knob (5) to align the index mark (6) on the 0-200 meter
aperture with the long center index line on the rear sight assembly.
(FM 3-22.9 Apr 2003 / 2-1 / PDF 34)

Question 14

Is SPORTS an Immediate or Remedial Action?

Answer 14

Immediate action

FM 3-22.9 Apr 2003 / 3-1 / PDF 57

Question 15

What is immediate action?

Answer 15

Immediate action involves quickly applying a possible correction to reduce a stoppage
without performing troubleshooting procedures to determine the actual cause.(SPORTS)
(FM 3-22.9 Apr 2003 / 3-1 PDF 57)

Question 16

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

Answer 16

Once. (If Rifle still fails to fire, apply remedial action)

FM 3-22.9 Apr 2003 / 3-1 / PDF 57

Question 17

What is a malfunction?

Answer 17

The weapon ceasing to fire due to a stoppage resulting from mechanical failure of the
weapon, magazine or ammo.
(FM 3-22.9 April 2003 / 3-2 / PDF 58)

Question 18

Name the different categories of malfunctions for the M4 Rifle.

Answer 18

Failure to feed, chamber or lock
Failure to fire cartridge
Failure to Extract
Failure to Eject
(FM 3-22.9 Apr 2003 / 3-2 / PDF 58)

Question 19

What is stoppage?

Answer 19

A stoppage is a failure of an automatic or semiautomatic firearm to complete the cycle of
operation..
(FM 3-22.9 Apr 2003 / 3-1 / PDF 57)

Question 20

How do you clear a stoppage?

Answer 20

Apply immediate or remedial action

FM 3-22.9 Apr 2003 / 3-1 / PDF 57

Question 21

What is the definition of Maximum Effective Range?

Answer 21

The greatest distance at which a soldier may be expected to deliver a target hit.
(FM 3-22.9 Apr 2003 / Glossary / PDF 336)

Question 22

What does CLP stand for?

Answer 22

Cleaner - It contains solvents that dissolve firing residue and carbon.
Lubricant - It lays down a layer of teflon as it dries to provide lubrication.
Preservative - It prevents rust from Forming.

Question 23

Describe the M4 Rifle.

Answer 23

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

Question 24

What are the 7 types of ammunition that can be used with the M4 Rifle?

Answer 24

M193 – Ball
M196 – Trace
M199 – Dummy
M200 – Blank (Violet tip and 7 petal rose crimp)
M855 – Ball (Green Tip)
M856 – Tracer (Red Tip)
M862 – Short Range Training Ammunition (Plastic with a Blue Tip)
(FM 3-22.9 Apr 2003 / 2-11 / PDF 52)

Question 25

Describe the weights of the M4 Rifle without mgazine and sling, with sling and loaded
20 round magazine and with sling and loaded 30 round magazine.

Answer 25

Without Magazine and Sling - 6.49 pounds
With Sling and a loaded 20 round magazine - 7.19 pounds
With Sling and a loaded 30 round magazine - 7.50 pounds
(FM 3-22.9 Apr 2003 / 2-1 / PDF 27)

Question 26

Describe the max effective rates of fire for the M4 Rifle.

Answer 26

Semiautomatic - 45 rounds per minute
Burst - 90 rounds per minute
Sustained - 12-15 rounds per minute
(FM 3-22.9 Apr 2003 / 2-1 / PDF 27)

Question 27

What is the muzzle velocity of the M4 Rifle?

Answer 27

2,970feet per second

FM 3-22.9 Apr 2003 / 2-1 / PDF 27

Question 28

Describe the ranges for the M4 Rifle.

Answer 28

Maximum Range - 3,600 meters
Max Effective Range for a Point Target - 500 meters
Max Effective Range for an Area Target - 600 meters
(FM 3-22.9 Apr 2003 / 2-1 / PDF 27)

Question 29

Describe the Barrel Rifling for the M4 Rifle.

Answer 29

Right hand twist 1/7

FM 3-22.9 Apr 2003 / 2-1 / PDF27

Question 30

What is the basic load of ammunition for the M4?

Answer 30

210 Rounds total. (7 magazines with 30 rounds in each)

Question 31

The elevation knob adjusts the point of aim for the M4 Rifle how much?

Answer 31

300 to 600 meters

FM 3-22.9 Apr 2003 / 7-31 / PDF 195

Question 32

What is the overall length of the M4 Rifle?

Answer 32

Buttstock Closed - 29.75 inches
Buttstock Open - 33.00 inches
(FM 3-22.9 Apr 2003 / 2-1 / PDF 27)

Question 33

What are the four positions for the buttstock of the M4 Rifle?

Answer 33

Closed
1/2 Open
3/4 Open
Full Open
(FM 3-22.9 Apr 2003 / 2-1 / PDF 33)

Question 34

What are the 8 steps in the functioning of the M4 rifle?

Answer 34

Feeding
Chambering
Locking
Firing
Unlocking
Extract ing
Ejecting
Cocking
(FM 3-22.9 Apr 2003 / 4-2 / PDF 66)

Question 35

What part of the M4 Rail Adapter System may be removed to perform PMCS?

Answer 35

Only the Lower Assembly

FM 3-22.9 Apr 2003 / 2-2 / PDF 35

Question 36

Describe the procedures for clearing the M4 Rifle.

Answer 36

Point the muzzle in a designated SAFE DIRECTION. Attempt to place selector lever on SAFE. If
weapon is not cocked, lever cannot be placed on SAFE.
Remove the magazine by depressing the magazine catch button and pulling the magazine down.
To lock bolt open,pull charging handle rearward. Press bottom of bolt catch and allow bolt to move
forward until it engages bolt catch. Return charging handle to fullforward position. If you have not
done so before, place the selector lever on SAFE.
Visually (not physically) inspect the receiver and chamber to ensure these areas contain no ammo.
With the select orlever pointing toward SAFE, allow the bolt to go forward by pressing the upper
portion of the bolt catch.
Place the select orlever on SEMI and squeeze the trigger.
Pull the charging handle fully rearward and release it, allowing the bolt to return to the full forward
position.
Place the select orlever on SAFE.
Close the ejection port cover.
(FM 3-22.9 Apr 2003 / 4-1 / PDF 66)

Question 37

How do you perform a functions check on the M4 Rifle?

Answer 37

Place the selector lever on safe. If the selector switch will not go on safe, pull the charging handle
to the rear and release. Place the selector lever on safe. Pull the trigger to the rear, the hammer
should not fall.
Place the selector lever on semi. Pull the trigger to the rear and hold. The hammer should fall.
While holding the trigger to the rear, pull the charging handle to the rear and release. Release the
trigger and pull it to the rear again. The hammer should fall.
Place the selector lever on burst. Pull the charging handle to the rear and release. Pull the trigger
to the rear and hold. The hammer should fall. While holding the trigger to the rear, pull the
charging handle to the rear three times and release. Release the trigger and pull it to the rear
again. The hammer should fall.