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Machine Gun ALC
Terms in this set (76)
M249 Max range
M249 Max effective range for Bipod point target
M249 Max effective range for Bipod area target
M249 Max effective range for tripod point target
M249 Max effective range for tripod area target
M249 grazing fire
M249 Rates of fire - Sustained:
50 RPM in 3-5 round burst
M249 Rates of fire - Rapid
100 RPM in 8-10 round burst.
M249 rates of fire - cyclic
M240 Max range
M240 max effective range
M240 grazing fire
M240 Max effective range for Bipod point target
M240 Max effective range for Bipod area target
M240 Max effective range for tripod point target
M240 Max effective range for tripod area target
M240 tracer burn out
M240 rates of fire - Sustained
100 RPM in 6-9 round burst
M240 rates of fire - rapid
200 rpm in 10-13 round burst
M240 rates of fire - cyclic
Ball, tracer AP, Incediary API, APIT
M2 Max range
M2 max effective range point/single shot
M2 max effective range area
M2 grazing fire
M2 rates of fire sustained and rapid
40 rpm 6-9 round burst
M2 Rates of fire cyclic
MK 19 Caliber
MK 19 Max range
MK 19 Max effective range point
MK 19 Max effective range area
MK 19 wieght (gun, cradle, tripod)
MK 19 Ammo HEDP
15m casualty radius
Rates of fire sustained
Rates of fire rapid
Rates of fire cyclic
What is Trajectory?
Curved path the round takes during its flight.
What is Max Ord
Highest point above the line of sight which a projectile rises during its flight. Occurs 2/3rds of the distance from weapon to target and increases with range.
What is cone of fire?
The pattern made by a group of rounds resulting from a burst of fire. Caused by vibration and variations in ammo and atmosphere.
What is the beaten zone?
Elliptical pattern formed on the ground or target by the striking rounds.
Shapes of the beaten zone?
Oval or Cigar shape.
What is the effective beaten zone?
85% of rounds
What are the classes of machine gun fire?
Respect to Ground
Respect to Target
Respect to weapon
What are the characteristics of Respect to Ground?
What are the characteristics of Respect to Target?
What are the characteristics of Respect to Weapon?
Free gun fire,
Search and traverse fire.
What is danger space?
In front of the weapon
What is grazing fire?
when the cone of fire is less than 1 meter above ground.
What is plunging fire?
Occurs when teh danger space is in the beaten zone. results in a loss of grazing fire at any point along the trajectory.
What is frontal fire
When the long axis of the beaten zone is at a right angle.
What is flanking fire?
When the gunner shoots at the side of a target.
What is oblique fire?
When the long axis is at any angle other than a right angle to the front of the target.
What is Fixed Fire?
Stationary point target and the depth and width of the beaten zone covers the target.
What is Searching Fire?
Searching pretains to depth by successive changes in elevation.
What is traversing fire?
Successive changes in direction left to right/right to left.
What is traversing and searching fire?
concurrent changes in depth and width (L or R/ Ror L)
Examples of point targets for fixed fire?
Enemy troops/ bunkers/ weapon emplacements/ lightly armored vehicles.
What fire will be used for linear targets?
What fire will be used for deep targets?
What fire will be used for linear and deep targets?
Searching and Traversing fire.
Distribution of fires depend on what?
Size and nature of target,
depth and width.
Example of concentration fire on point targets
Enemy fighting positions.
Referring to rates of fire, what is normal rate of fire?
Reffering to rapid ROF when must a barrel change occur and what does it allow?
Barrel change after 2 minutes allows for a exceptionally high volume of fire but for a short time.
What is cyclic fire?
Uses the most amount of ammo that can be used in 1 minute.
How is cyclic fire achieved?
Holding the trigger down uninterrupted for 1 minute.
• Sector of Fire.
• Final Protective Fire.
• Final Protective Line.
• Principal Direction of Fire.
• Grazing Fire.
• Dead Space.
• Primary Sector of Fire.
• Secondary Sector of Fire.
Leader initiated methods of Fire Control.
• Arm and Hand Signals.
• Prearranged Signals.
• Personal Contact.
• Range Cards.
• Standing Operating Procedures.
Gun Team initiated methods of Fire Control.
• Return Fire.
• Shift Fire.
• Rate of Fire.
• Initial Fire Commands.
• Subsequent Fire Commands.
• Doubtful Elements and Corrections.
• Abbreviated Fire Commands.
Initial fire commands
Alert, Direction, description, range, method of fire, command to open fire
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