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M4
Army Study Guide
35
Other
Not Applicable
03/23/2012

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Cards

Term
What is the FM concerning the M4 Rifle?
Definition
FM 3-22.9
Term
What is the first thing you should do when you handle a weapon?
Definition
Make sure you clear it
Term
Name the five phases in Basic Rifle Marksmanship.
Definition
1. Preliminary Rifle Instruction
2. Downrange Feedback
3. Field Fire
4. Advanced Rifle Marksmanship
5. Advanced Optics, Laser and Iron Sights
Term
What is the purpose of a weaponeer?
Definition
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.
Term
What are the four fundamentals of marksmanship?
Definition
1. Steady Position
2. Proper Aim (Sight Picture)
3. Breathing
4. Trigger Squeeze
Term
During Preliminary Marksmanship Training (PMI), what are the only two positions taught?
Definition
1. Individual Foxhole supported
2. Basic Prone unsupported
Term
What are the two basic elements of the Sight Picture?
Definition
1. Sight Alignment
2. Placing of the Aiming Point
Term
What does the acronym SPORTS stand for?
Definition
Slap, Pull, Observe, Release, Tap and Shoot
Term
What is remedial action?
Definition
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.
Term
Describe the proper procedures for applying remedial action with the M4.
Definition
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
Term
Describe the proper procedure for applying immediate action with the M4.
Definition
1. Slaps gently upward on the magazine
2. Pulls the charging handle fully to the rear.
3. Observes for the ejection of a live round or expended cartridge.
4. Releases the charging handle
5. Taps the forward assist assembly to ensure bolt closure.
6. Squeezes the trigger and tries to fire the rifle.
Term
What are the steps required in order to mechanically zero the M4?
Definition
1. 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).
2. Adjust the elevation knob (3) counterclockwise until the rear sight assembly (4) rests
flush with the detachable carrying handle and the 6/3marking is aligned with the index line (5)
3. 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.
Term
What are the steps required in order to battle sight zero the M4?
Definition
1. 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.
2. 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.
Term
Is SPORTS an Immediate or Remedial Action?
Definition
Immediate action
Term
What is immediate action?
Definition
Immediate action involves quickly applying a possible correction to reduce a stoppage without performing
troubleshooting procedures to determine the actual cause.(SPORTS)
Term
How many times should immediate action be applied to a weapon?
Definition
Once. (If Rifle still fails to fire, apply remedial action)
Term
What is a malfunction?
Definition
The weapon ceasing to fire due to a stoppage resulting from mechanical failure of the weapon, magazine ammo
Term
Name the different categories of malfunctions for the M4 Rifle.
Definition
1. Failure to feed, chamber or lock
2. Failure to fire cartridge
3. Failure to Extract
4. Failure to Eject
Term
What is stoppage?
Definition
A stoppage is a failure of an automatic or semiautomatic firearm to complete the cycle of operation.
Term
How do you clear a stoppage?
Definition
Apply immediate or remedial action
Term
What is the definition of Maximum Effective Range?
Definition
The greatest distance at which a soldier may be expected to deliver a target hit.
Term
What does CLP stand for?
Definition
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.
Term
Describe the M4 Rifle.
Definition
A 5.56 mm, magazine fed, gas-operated, air-cooled, semiautomatic or three-round burst, hand-held, shoulder-fired
weapon.
Term
What are the 7 types of ammunition that can be used with the M4 Rifle?
Definition
1. M193 – Ball
2. M196 – Trace
3. M199 – Dummy
4. M200 – Blank (Violet tip and 7 petal rose crimp)
5. M855 – Ball (Green Tip)
6. M856 – Tracer (Red Tip)
7. M862 – Short Range Training Ammunition (Plastic with a Blue Tip)
Term
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.
Definition
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
Term
Describe the max effective rates of fire for the M4 Rifle.
Definition
Semiautomatic - 45 rounds per minute
Burst - 90 rounds per minute
Sustained - 12-15 rounds per minute
Term
What is the muzzle velocity of the M4 Rifle?
Definition
2,970feet per second
Term
Describe the ranges for the M4 Rifle.
Definition
Maximum Range - 3,600 meters
Max Effective Range for a Point Target - 500 meters
Max Effective Range for an Area Target - 600 meters
Term
Describe the Barrel Rifling for the M4 Rifle.
Definition
Right hand twist 1/7
Term
What is the basic load of ammunition for the M4?
Definition
210 Rounds total. (7 magazines with 30 rounds in each)
Term
The elevation knob adjusts the point of aim for the M4 Rifle how much?
Definition
300 to 600 meters
Term
What is the overall length of the M4 Rifle
Definition
Closed: 29.75 Inches
Open: 33.00 Inches
Term
What are the four positions for the buttstock of the M4 Rifle?
Definition
1. Closed
2. 1/2 Open
3. 3/4 Open
4. Full Open
Term
What are the 8 steps in the functioning of the M4 rifle?
Definition
1. Feeding
2. Chambering
3. Locking
4. Firing
5. Unlocking
6. Extract ing
7. Ejecting
8. Cocking
Term
What part of the M4 Rail Adapter System may be removed to perform PMCS?
Definition
Only the Lower Assembly
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