Machine Guns

Question 1

WHAT SIZE ROUNDS TYPICALLY CLASSIFY THE LIGHT, MEDIUM, AND HEAVY MACHINEGUNS?

Answer 1

LIGHT MACHINE GUN - .22 TO .250 (5.45MM TO 6MM)
MEDIUM MACHINEGUN - .264 TO .33 (6.5MM TO 8MM)
HEAVY MACHINEGUN - .50 OR LARGER (12.7MM TO 15MM)

Question 2

WHAT ARE THE THREE TYPES OF MECHANICAL MEANS MACHINEGUNS OPERATE BY?

Answer 2

1. BLOWBACK OPERATION
2. GAS OPERATION
3. RECOIL OPERATION

Question 3

WHAT ARE THE 4 ROLES OF MACHINEGUNS IN THE OFFENSE?

Answer 3

1. CLOSE SUPPORTING FIRES
2. LONG RANGE FIRES
3. FLANK PROTECTIVE FIRES
4. FIRES IN SUPPORT OF CONSOLIDATION

Question 4

WHAT ARE THE 3 ROLES OF MACHINEGUNS IN THE DEFENSE?

Answer 4

A. LONG RANGE FIRES
B. CLOSE DEFENSIVE FIRES
C. FINAL PROTECTIVE FIRES

Question 5

WHAT ARE THE FOUR FUNDAMENTALS OF MACHINE GUNNERY

Answer 5

A. ACCURATE INITIAL BURST
B. ADJUSTMENT OF FIRE
C. MECHANICAL SKILL IN MANIPULATION
D. SPEED

Question 6

WHAT IS THE WEIGHT OF THE M240G MACHINEGUN?

Answer 6

25.6 LBS UNLOADED

Question 7

WHAT IS THE MUZZLE VELOCITY OF THE M240G MACHINEGUN?

Answer 7

2,800 FEET PER SECOND

Question 8

WHAT IS THE MAXIMUM RANGE OF THE M240G MACHINEGUN?

Answer 8

3,725 METERS

Question 9

WHAT IS THE MAXIMUM EFFECTIVE RANGE OF THE M240G MACHINEGUN ON A POINT TARGET?

Answer 9

800 METERS

Question 10

WHAT IS THE MAXIMUM EFFECTIVE RANGE OF THE M240G MACHINEGUN ON AN AREA TARGET?

Answer 10

1,800 METERS

Question 11

WHAT IS THE SUSTAINED RATE OF FIRE FOR THE M240G MACHINE GUN?

Answer 11

100 ROUNDS PER MINUTE FIRED IN 6 TO 8 ROUND BURSTS. 4 TO 5 SECONDS BETWEEN BURSTS. BARREL CHANGE EVERY 10 MINUTES.

Question 12

WHAT IS THE RAPID RATE OF FIRE FOR THE M240G MACHINE GUN?

Answer 12

200 ROUNDS PER MINUTE FIRED IN 10 TO 12 ROUND BURSTS. 2 TO 3 SECONDS BETWEEN BURSTS. BARREL CHANGE EVERY 2 MINUTES.

Question 13

WHAT IS THE CYCLIC RATE OF FIRE FOR THE M240G MACHINE GUN?

Answer 13

650 TO 950 ROUNDS PER MINUTE FIRED IN CONTINUOUS BURST. BARREL CHANGE
EVERY MINUTE

Question 14

WHAT IS THE CYCLE OF FUNCTIONING FOR THE M240G MACHINEGUN?

Answer 14

FEEDING, CHAMBERING, LOCKING, FIRING, UNLOCKING, EXTRACTING, EJECTION, COCKING

Question 15

WHAT ARE THE FIVE CLASSIFICATIONS OF AMMUNITION FOR THE M240G MACHINEGUN?

Answer 15

TRACER, BALL, BLANK, DUMMY, ARMOR-PIERCING

Question 16

WHAT IS THE WEIGHT OF THE M2 .50 CAL MACHINEGUN?

Answer 16

84 LBS (APPX)

Question 17

WHAT IS THE MUZZLE VELOCITY OF THE M2 .50 CAL MACHINEGUN (WITH BALL AMMUNITION)?

Answer 17

3,050 FEET PER SECOND

Question 18

WHAT IS THE MAXIMUM RANGE OF THE M2 .50 CAL MACHINEGUN?

Answer 18

6,767 METERS

Question 19

WHAT IS THE MAXIMUM EFFECTIVE RANGE OF THE M2 .50 CAL MACHINEGUN?

Answer 19

1,829 METERS

Question 20

THE LEAF SIGHT ON THE M2 .50 CAL MACHINEGUN CAN BE ADJUSTED FOR WHAT RANGE?

Answer 20

100 TO 2600 YARDS

Question 21

HOW MANY RATES OF FIRE ARE THERE FOR THE .50 CAL MACHINE GUN?

Answer 21

FOUR. SINGLE SHOT, SUSTAINED, RAPID, CYCLIC.

Question 22

DESCRIBE THE SUSTAINED RATE OF FIRE FOR THE .50 CAL MACHINE GUN?

Answer 22

LESS THAN 40 ROUNDS PER MINUTE FIRED IN 6-9 ROUND BURSTS AT 10 TO 15 SECOND INTERVALS. CHANGE THE BARREL AT THE END OF FIRING SESSION OR IF DAMAGED.

Question 23

DESCRIBE THE RAPID RATE OF FIRE FOR THE .50 CAL MACHINE GUN.

Answer 23

GREATER THAN 40 ROUNDS PER MINUTE, FIRED IN BURSTS OF 6-9 ROUNDS AT 5 TO 10 SECOND INTERVALS. CHANGE THE BARREL AT THE END OF FIRING SESSION OR IF DAMAGED.

Question 24

DESCRIBE THE CYCLIC RATE OF FIRE FOR THE .50 CAL MACHINE GUN.

Answer 24

450 TO 600 ROUNDS PER MINUTES FIRED IN CONTINUOUS BURST. CHANGE THE BARREL AT THE END OF FIRING SESSION OR IF BARREL IS DAMAGED.

Question 25

WHAT ARE THE FIVE CLASSIFICATIONS OF AMMUNITION FOR THE M2 .50 CAL MACHINEGUN?

Answer 25

BALL, TRACER, ARMOR-PIERCING, INCENDIARY, DUMMY

Question 26

WHEN TRIPOD MOUNTED AND CONTROLLED BY A T&E, WHAT IS THE MAXIMUM ELEVATION
THE M2 .50 CAL MACHINEGUN CAN ACHIEVE?

Answer 26

100 MILS

Question 27

WHEN TRIPOD MOUNTED AND CONTROLLED BY A T&E, WHAT IS THE MAXIMUM DEPRESSION
THE M2 .50 CAL MACHINEGUN CAN ACHIEVE?

Answer 27

250 MILS

Question 28

WHEN TRIPOD MOUNTED AND CONTROLLED BY A T&E, WHAT IS THE MAXIMUM TRAVERSE THE
M2 .50 CAL MACHINEGUN CAN ACHIEVE?

Answer 28

800 MILS (400 LEFT / 400 RIGHT)

Question 29

WHAT ARE THE FOUR FACTORS THAT AFFECT THE BURST OF FIRE FROM ANY MACHINEGUN?

Answer 29

A. SIZE OF THE TARGET
B. SHAPE OF THE TARGET
C. GROUND FORMATION
D. AMMUNITION SUPPLY

Question 30

WHAT ARE THE FOUR MAJOR FACTORS THAT INFLUENCE THE TRAJECTORY OF A ROUND?

Answer 30

A. VELOCITY OF THE ROUND
B. GRAVITY OF THE EARTH
C. ROTATION OF THE ROUND
D. RESISTANCE OF THE AIR

Question 31

DESCRIBE THE CONE OF FIRE.

Answer 31

WHEN A BURST IS FIRED, THE VIBRATIONS OF THE MACHINEGUN AND TRIPOD, VARIATIONS ON
AMMUNITION, AND CONDITIONS OF THE ATMOSPHERE GIVE EACH BULLET A TRAJECTORY
DIFFERING SLIGHTLY FROM THAT OF OTHERS.

Question 32

DESCRIBE THE BEATEN ZONE.

Answer 32

THE AREA OF THE GROUND UPON WHICH THE CONE OF FIRE FALLS.

Question 33

DESCRIBE DEAD SPACE.

Answer 33

AN AREA WITHIN THE MAXIMUM RANGE OF A WEAPON WHICH CANNOT BE COVERED BY FIRE
OR OBSERVATION FROM A PARTICULAR POSITION.

Question 34

DESCRIBE DANGER SPACE

Answer 34

THE AREA FROM THE MUZZLE OF THE GUN, OUT TO AND INCLUDING THE BEATEN ZONE, WHERE A STANDING MAN WILL BE HIT, SOMEWHERE ON HIS BODY, BY SOME PART OF THE CONE
OF FIRE

Question 35

THE TWO CLASSES OF FIRE WITH RESPECT TO THE GROUND ARE WHAT?

Answer 35

A. GRAZING FIRE

B. PLUNGING FIRE

Question 36

THE FOUR CLASSES OF FIRE WITH THE RESPECT TO THE TARGET ARE WHAT?

Answer 36

A. FRONTAL FIRE
B. FLANKING FIRE
C. OBLIQUE FIRE
D. ENFILADE FIRE

Question 37

THE SIX CLASSES OF FIRE WITH RESPECT TO THE GUN ARE KNOWN AS WHAT?

Answer 37

A. FIXED FIRE
B. TRAVERSING FIRE
C. SEARCHING FIRE
D. TRAVERSING AND SEARCHING FIRE
E. SWINGING TRAVERSE
F. FREE GUN

Question 38

WHAT ARE THE FOUR BASIC FACTORS THAT EFFECT RANGE DETERMINATION?

Answer 38

A. NATURE TARGET
B. NATURE OF TERRAIN
C. LIGHTING CONDITIONS
D. PERSONAL QUIRKS