Weapons Flashcards
SAMC Chapter 3
Describe the M4 rifle?
a lightweight, 5.56-mm, magazine-fed, gas operated, air-cooled, shoulder-fired rifle or carbine.
What are the five types of ammunition the M4 uses?
5.56mm
M855
M856
MK301 (tracer)
M995 (Armor Piercing)
M200 (blank)
There are actually 10.
TC 3-22.9 Appendix A
Describe the barrel rifling of the M4.
What is the cyclic rate of fire for the M4?
700-970 rounds per minute.
What is the maximum range of the M4?
3,600 meters
What is the maximum EFFECTIVE range of the M4.
500 meters
What is the battle sight zero distance of the M4?
300 meters
Define sustained rate of fire for the M4.
12-15 rounds
Describe stoppage.
A stoppage is any failure of the weapon to complete the cycle of operation, leading to the weapon not firing when the trigger is pulled.
Describe Sports
Slap, Pull, Observe, Release, Tap, and Squeeze
What is immediate action for the M4?
simple, rapid actions or motions taken by the Soldier to
correct basic disruptions in the cycle of function of the weapon.
What is the first step before disassembling the M4?
That the weapon is on safe and clear.
Describe the three types of stoppage.
Failure to feed, chamber, or lock
Failure to fire
Failure to extract or eject
Each click of elevation on the M4 raises the round how much at 100 meters?
Each click moves the point of impact approximately 1.2 inches (or 3 cm) at 100 meters
In what position should the rear sight of the M4 be set when zeroing?
The rear sight should be set to the 8/3 (300 meters) setting when zeroing.
What steps should be taken with the elevation knob when battle sight zeroing the M4?
Set the rear sight elevation knob to 8/3 and adjust as necessary to zero the weapon at 25 meters.
How should elevation changes be made with the M4 when zeroing?
Elevation changes are made by adjusting the front sight post up or down
What is the purpose of zeroing your weapon?
Zeroing ensures that the sights are aligned with the barrel, so the rounds hit the target where aimed at a specific distance.
When firing a weapon, what does the term trajectory mean?
Trajectory refers to the path of the bullet from the muzzle to the point of impact, influenced by gravity and air resistance.
How do you identify tracer ammunition?
Tracer rounds have a red tip to visually identify them.
Name three things that could cause a malfunction on the M4.
Dirty or poorly lubricated weapon
Faulty ammunition
Damaged magazine or misaligned rounds.
