MG Flashcards
What are the principles of MG Employment?
PICMDEEP
Pairs Interlocking fires Coordination of fires Mutual support Defilade Enfilade Economy Protection
What are the methods of fire control?
Verbal Hand and arm signals Prearranged signals Personal contact Range card
What are the six elements of fire control?
Alert Direction Description Range Method of fire Command to open fire
M249/M240 sustained rate of fire?
M249- 50 rpm 3-5 round burst
M240- 100 rpm 6-9 round burst
Gunner pauses 4-5 seconds between bursts
Barrel change every 10 minutes
M249/M240 rapid rate of fire?
Trying to gain fire superiority
M249- 100rpm 6-8 round burst
M240- 200rpm 10-12 round burst
Gunner pauses 2-3 seconds between bursts
Barrel change every 2 minutes
M249/M240 cyclic rate of fire?
Used for combat emergencies
M249 850rpm
M240-650-950rpm
M60- 550rpm
Barrel change every minute
What positions are used in the offense?
Primary
Alternate
Supplementary
What are two types of techniques used for air defense?
Football field technique
(Fast mover- 2 fields, Slow mover- 1 field)
Reference point technique
What are the 3 assault firing positions?
Hip firing position
Underarm firing position
Shoulder firing position
What are the miscellaneous firing positions?
Sitting position with tripod mount Prone position Legs crossed Legs braced Aircraft firing position
Who is a sector of fire assigned to?
An individual, a weapon, or a unit
Who is a primary sector of fire assigned to and why?
Assigned to a gun team to cover the most likely avenue of enemy approach
What is an FPL?
A predetermined line along which grazing fire is placed to stop an enemy assault
What is a principal direction of fire?
Direction of fire assigned primarily to cover and area that has good fields of fire
What is grazing fire?
Occurs when the center of the cone of fires rises less than 1m above the ground
What is plunging fire?
When the danger space is within the beaten zone. Occurs at longer ranges, when firing from higher ground to low ground, and when firing abruptly
What are the classes of fire in respect to the ground? Weapon? Target?
Ground- Grazing and plunging fire
Weapon- Fixed, Traversing, Searching, Traverse and Searching, Swinging Traverse, Free gun
Target- Frontal, Flanking, Oblique, Enfilade
What is trajectory?
Path of the round in flight to the target. Recoil, stability, and control of the weapon all affect the trajectory of the round.
What is the beaten zone?
Elliptical pattern formed on the ground by the striking rounds. Length changes as the range to the target increases
What is danger space?
Space between the MG and the target where the trajectory rises less than 1.8m off the ground.
Describe fixed fire?
Delivered against a point target when depth and width of the beaten zone covers the target
Describe traversing fire?
Fire distributed IN WIDTH with successive changes in direction.
Gunner selects several aiming points throughout the width of the target. Aiming points are close enough to provide coverage without wasting ammo
Describe Searching fire?
Fire distributed IN DEPTH by changes in elevation.
Gunner selects several aiming points. Changes made to each aiming point depend on the range and slope
Describe Traversing and Searching fire?
Fire distributed IN WIDTH and DEPTH by changes in elevation and direction.
Provides good coverage of a target
