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0211 Study Guide > Machine Guns > Flashcards

Machine Guns Flashcards

1
Q

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

A

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)

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2
Q

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

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

WHAT ARE THE 4 ROLES OF MACHINEGUNS IN THE OFFENSE?

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

WHAT ARE THE 3 ROLES OF MACHINEGUNS IN THE DEFENSE?

A

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

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5
Q

WHAT ARE THE FOUR FUNDAMENTALS OF MACHINE GUNNERY

A

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

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6
Q

WHAT IS THE WEIGHT OF THE M240G MACHINEGUN?

A

25.6 LBS UNLOADED

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7
Q

WHAT IS THE MUZZLE VELOCITY OF THE M240G MACHINEGUN?

A

2,800 FEET PER SECOND

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8
Q

WHAT IS THE MAXIMUM RANGE OF THE M240G MACHINEGUN?

A

3,725 METERS

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9
Q

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

A

800 METERS

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10
Q

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

A

1,800 METERS

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11
Q

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

A

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

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12
Q

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

A

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

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13
Q

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

A

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

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14
Q

WHAT IS THE CYCLE OF FUNCTIONING FOR THE M240G MACHINEGUN?

A

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

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15
Q

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

A

TRACER, BALL, BLANK, DUMMY, ARMOR-PIERCING

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16
Q

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

A

84 LBS (APPX)

17
Q

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

A

3,050 FEET PER SECOND

18
Q

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

A

6,767 METERS

19
Q

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

A

1,829 METERS

20
Q

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

A

100 TO 2600 YARDS

21
Q

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

A

FOUR. SINGLE SHOT, SUSTAINED, RAPID, CYCLIC.

22
Q

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

A

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.

23
Q

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

A

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.

24
Q

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

A

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

25
Q

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

A

BALL, TRACER, ARMOR-PIERCING, INCENDIARY, DUMMY

26
Q

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

A

100 MILS

27
Q

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

A

250 MILS

28
Q

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

A

800 MILS (400 LEFT / 400 RIGHT)

29
Q

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

A

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

30
Q

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

A

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

31
Q

DESCRIBE THE CONE OF FIRE.

A

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.

32
Q

DESCRIBE THE BEATEN ZONE.

A

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

33
Q

DESCRIBE DEAD SPACE.

A

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

34
Q

DESCRIBE DANGER SPACE

A

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

35
Q

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

A

A. GRAZING FIRE

B. PLUNGING FIRE

36
Q

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

A

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

37
Q

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

A 
A. FIXED FIRE
B. TRAVERSING FIRE
C. SEARCHING FIRE
D. TRAVERSING AND SEARCHING FIRE
E. SWINGING TRAVERSE
F. FREE GUN
38
Q

WHAT ARE THE FOUR BASIC FACTORS THAT EFFECT RANGE DETERMINATION?

A

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

0211 Study Guide (2 decks)

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