M4 - 5.56mm Semiautomatic Rifle Flashcards
What is the FM concerning the M4 rifle?
FM 3-22.9
What is the purpose of a weaponeer?
Capable of simulating all BRM live fire scenarios without firing rounds
What is the first thing you should do when you handle a weapon?
Clear it
5 phases in Basic Rifle Marskmanship
- Preliminary Rifle Instruction
- Downrange Feedback
- Field Fire
- Advances rifle marksmanship
- Advances optics, laser and iron sights
4 fundamentals of marksmanship
- Steady Position
- Proper Aim( Sight Picture)
- Breathing
- Trigger Squeeze
During Preliminary Marksmanship Training(PMI), what are the only two positions taught?
- Individual foxhole supported
2. Basic prone supported
2 basic elements of the sight picture
- Sight alignment
2. Placing of the aiming point
The acronym SPORTS stands for
Slap, pull, observe, release, tap, shoot
What is remedial action?
Continuing effort to determine the cause for a stoppage or malfunction and try to clear it once identified
Proper procedure for applying remedial action with the M4
- 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
Proper procedure for applying immediate action with the M4
- Slap gently upward on the magazine
- Pull charging handle fully to the rear
- Observe the ejection of a live round or expended cartridge
- Release the charging handle
- Tap the forward assist
- Squeeze the trigger
Is SPORTS an immediate or remedial action?
Immediate action
What is immediate action?
Quickly applying a possible correction to reduce stoppage without performing troubleshooting procedures to determine actual cause
How many times should immediate action be applied to a weapon?
Once. If rifle still fails, apply remedial action
What is a malfunction?
Weapon ceasing to fire due to stoppage resulting from mechanical failure
Different categories of malfunctions for the M4 rifle
- Failure to feed, chamber or lock
- Failure to fire cartridge
- Failure to extract
- Failure to eject
What is stoppage?
Failure of an automatic or semi auto firearm to complete the cycle of operation
How do you clear a stoppage?
Apply immediate or remedial action
Define Maximum Effective Range
Greatest distance at which a soldier may be expected to deliver a target hit
What does CLP stand for?
Cleaner Lubricant Preservative
Describe the M4 rifle
5.56mm, magazine fed, gas-operated, air cooled, semiauto or three round burst, hand held, shoulder fired weapon
7 types of ammo that can be used with the M4 rifle?
- M193 - Ball
- M196 - Trace
- M199 - Dummy
- M200 - Blank
- M855 - Ball(Green Tip)
- M856 - Tracer(Red Tip)
- M862 - Short Range Training Ammunition( plastic with blue tip)
Describe weights of the M4 rifle
- Without magazine and sling - 6.49 pounds
- With sling and loaded 20 round magazine - 7.19 pounds
- With sling and loaded 30 round magazine - 7.5 pounds
Effective rates of fire for the M4 rifle
- Semiauto - 45 rounds/ minute
- Burst - 90 rounds/minute
- Sustained - 12-15 rounds/minute