Weapons Flashcards
What caliber is the m-4 carbine?
5.56mm NATO
What is standard duty issued rounds for the M-4?
M855 Ball/ M856 Tracer
Can M193 ball and M196 tracer be safely fired from the M-4?
Yes
How can 855 ball ammunition be identified?
Copper jacketed with green tip
How many rounds can be loaded into the standard issue M4 carbine magazine?
30
Weight of the M-4 with a loaded 30 round magazine?
7.5 pounds
What is the purpose of the compensator on the M-4?
Prevent dirt from getting in your face, prevent muzzle firing, flash suppression
What is the correct description of the M-4
Light weight, air cooled, gas operated, magazine fed, shoulder fired weapon
The cycle of operations for the M-4?
Feeding,chambering, locking, firing, unlocking, extracting, ejecting, cocking
Maximum effect range of a point target for M-4 is?
500 meters
Maximum effect range of a area target for M-4 is?
600
SEMI rate of fire for the M-4?
45 rounds per minute
BURST rate of fire for the M-4?
90 rounds per minute
Maximum range for the M-4?
3600 meters
Cyclic rate of fire for the M-4?
700 to 970 per minute
What is the sustain rate of fire for the M-4?
12-15 rounds per minute
Proper steps for clearing the M-4?
Safe, mag out, lock bolt to rear, chamber, safe, bolt forward
Proper loading procedure for the M4 for duty?
Weapon clear, safe, close bolt, close ejection port cover, press tigger, insert mag, weapon safe
Proper procedure for realizing M4
Remove empty mag, insert new mag, hit the bolt catch to close the bolt, forward assist
If you pull the trigger and your M4 fails to fire, what must you do?
Apply immediate actions
What acronym identifies immediate action to the M4?
Sports
What are the steps to applying immediate action?
Slap the magazine, pull back the charging handle, observe ejection of round or case, chamber clear, release charging handle, tab forward assist, squeeze the trigger
How soon should immediate actions be applied to avoid a cook off round?
10 seconds
How many rounds fired continuously through the M4 can cause a cook off?
140
If immediate actions fail what should you do?
Remedial actions
Proper steps to remedial actions
Clear, remove jammed rounds, reload and attempt to fire
While applying immediate actions you observe a round in the chamber and you suspect a cook off, what do you do?
Keep your safe away from the ejection port and remove the round fast. If you can’t remove the round within 10 sec, remove mag and let weapon cool for 15 min
If you cannot remove a round from the hot chamber of your M4 within 10 sec what action should you take? I
Keep your face away from the ejection port,point weapon in safe direction, remove mag and let weapon cool for 15 min
What is a cook off?
When a round self detonates from heat build up in a weapons chamber
If you hear a pop or experience a change in felt recoil, what should you do?
Don’t apply immediate actions, stop firing bc bullet can be stuck in barrel.
What could happen if immediate actions is applied and the M4 was fired with a bullet stuck in the barrel?
The weapon could explode resulting in damage to the weapon
What should you do if a bullet is stuck into the barrel?
Clear weapon, open receivers, remove bolt carrier group and inspect for obstruction
What type of malfunction is considered severe
Failure to extract
3 types hub lube?
CLP,LSA, LAW
Temperature for CLP and LSA
Negative 1 and above
For -10r Fahrenheit and below
LAW
Definition of lightly lubricated
Barely visible to the eye
Generously lubricated
Enough to be spread with a finger
What must you do before switching lubricants on the M4
Completely remove old lubricant
Until artic conditions, what actions must you take to prevent M4 from freezing and becoming inop
Clear and hand cycle the weapon every 30 min
Under hot,wet jungle conditions, how should the M4 be lubricated?
Clean and lubricated more frequently with CLP LSA
What must the weapon and magazine be frequently inspected for in hot, wet jungle climate
Corrosión
Im hot,, dry desert climates, how should the M4 be lubricated
Lightly lubricantes internal parts only using CLP and LSA
In hot, dry desert climates, what must be continually cleaned from the weapon to prevent stoppage?
Sand, fine dust
In hot, dry desert climates, how often should you clean your rifle?
Daily or asap after firing
In hot,dry, desert what can you do to keep dust and sand out of rifle?
Use muzzle cap, keep ejection port closed, keep magazine installed, use protection bag, clean weapon and mag frequently
As a minimum what items must be contained in the M4 weapon cleaning kit?
Cleaning rod sections, cleaning rod handle, eyelet, small arms cleaning brush, bore brush, chamber brush, patches, cloth, pipe cleaners, lubricant CLP AND LSA
What item from your cleaning kit cleans the firing pin hole?
CLP
What item cleans carbon from the back of the M4 bolt
Old worn bore brush and CLP
How is the chamber brush used to clean the M4
Attach a cleaning rod handle, plunging and turning strokes
Under normal conditions, how should the bolt assembly and cam bolt be lubricated?
Generously
M4 front sight lubrication
In drop of CLP or LSA onto the front sight post pin
When operating under normal conditions, how should the gas carrier key be lubricated on the M4
One drop on the bolt carrier key
Proper method of lubricating the ejector
Apply a few drops of CLP to the ejector, press down on ejector to work lubricant in
During inspection and cleaning, what items should you check on the barrel assembly
Compensator looseness
When carrying the M4, what safety rules apply
Weapon safety briefing