General Machine Gun

Question 1

What size rounds typically classify light, medium, and heavy machine guns

Answer 1

Light .22-.250 (5.45 to 6mm)
Medium .264-.33 (6.5 to 8 mm)
Heavy .50 or larger (12.7 to 15mm)

Question 2

Three types of mechanical means machine guns operate by

Answer 2

• Blowback operation
• Gas operation
• Recoil operation

Question 3

Four roles of machine guns in the offense

Answer 3

• Close supporting fires
• Long range fires
• Flank protective fires
• Fires in support of consolidation

Question 4

Three roles of machine guns in the defense

Answer 4

• Long range fires
• Close defensive fires
• Final protective fires

Question 5

Four fundamentals of machine gunnery

Answer 5

• Accurate initial bursts
• Adjustment of fire
• Mechanical skill in manipulation
• Speed

Question 6

Four factors that affect the burst of fire from any machine gun

Answer 6

• Size of target
• Shape of target
• Ground formation
• Ammunition supply

Question 7

Four major factors that influence trajectory of round

Answer 7

• Velocity of the round
• Gravity of Earth
• Rotation of the round
• Resistance of the air

Question 8

When a burst is fired, the vibrations of the machine gun and tripod, variations on ammunition, and conditions of the atmosphere give each bullet a trajectory differing slightly from that of other is known as what

Answer 8

Cone of fire

Question 9

Area of the ground upon which the cone of fire falls is known as what

Answer 9

Beaten zone

Question 10

An area within the max range of a weapon which cannot be covered by fire or observation from a particular position is known as what

Answer 10

Dead space

Question 11

Area from the muzzle, 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 is known as what

Answer 11

Danger space

Question 12

Two classes of fire with respect to the ground

Answer 12

• Grazing Fire

- Plunging Fire

Question 13

Four classes of fire with respect to the target

Answer 13

• Frontal fire
• Flanking fire
• Oblique fire
• Enfilade fire

Question 14

Six classes of fire with respect to the gun

Answer 14

• Fixed fire
• Traversing fire
• Searching fire
• Traverse and searching fire
• Swinging traverse
• Free gun

Question 15

Four basic factors that affect range determination

Answer 15

• Nature of target
• Nature of terrain
• Lighting conditions
• Personal quirks