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SCWS Study Guide Common Core > CC 108 Weapons > Flashcards

CC 108 Weapons Flashcards

1
Q

State the four weapons safety rules.

A

Treat every weapon as if it were loaded.
Never point a weapon at anything you do not intend to shoot.
Keep finger straight and off the trigger until you are ready to fire.
Keep weapon on safe until you intend to fire.

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2
Q

State the four weapons conditions

A

Magazine inserted, round in chamber, bolt forward, safety on and ejection port cover closed.
Not applicable to the M4,M9 or M500.
Magazine inserted, chamber empty, bolt forward, safety on and ejection port cover closed.
Magazine removed, chamber empty, bolt forward, safety on and ejection port cover closed.

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3
Q

What weapons systems are in the NCF?

A

M-4
M-9
M2HB
MK-19
M-203
M-240B
M-500

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4
Q

Define “Misfire”

A

A misfire is a complete failure to fire (The weapon functions properly but the round does not fire.)

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5
Q

Define “Malfunction”

A

A malfunction occurs because of a stoppage caused by a mechanical failure of the weapon, magazine, or ammunition.

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6
Q

Define “Stoppage”

A

A stoppage is any interruption in the cycle functioning caused by faulty action of the weapon or faulty ammunition.

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7
Q

State the eight steps of operation in a firing cycle

A

Feeding
Chambering
Locking
Firing
Unlocking
Extracting
Ejecting
Cocking

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8
Q

Explain the difference between Semiautomatic and Automatic.

A

With the selector lever in the semiautomatic position, the rifle fires one round each time you pull the trigger. With the selector lever in the automatic position, the M4 rifle continues to fire until the magazine is empty or you release the trigger

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9
Q

Define “Trajectory”

A

The path described by a projectile in flight.

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10
Q

Define “Breech”

A

The rear end of the barrel.

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11
Q

Define “Bore”

A

Define “Bore”

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12
Q

Define “Chamber”

A

The enlarged part of the bore at the breech that holds the cartridge.

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13
Q

. Define “Muzzle”

A

The front or forward end of the barrel; the mouth of the barrel.

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14
Q

Define “Muzzle Velocity”

A

The speed at which a bullet travels when it leaves the muzzle of the barrel.

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15
Q

Define “Maximum Range”

A

The greatest distance that the projectile will travel.

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16
Q

Define “Maximum Effective Range”

A

The greatest distance at which a weapon may be expected to fire accurately to inflict damage or casualties.

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17
Q

Discuss the colors of small arms ammunition.

A

Green Ball
Orange or Red Tracer
Violet Blank
Black Armor Piercing
Aluminum Armor Piercing Incendiay

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18
Q

State the maximum range, maximum effective range, and type of ammunition for the M-9 service pistol.

A

Maximum Range 1800 meters
Maximum Effective Range 50 meters
Type of Ammunition 9 mm

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19
Q

Discuss loading the M4.

A

With the hammer cocked, place the selector lever on SAFE. Open the bolt and lock it open. Hold the stock of the rifle under the right arm with the right hand grasping the pistol grip and point the muzzle in a safe direction. With the left hand, insert a loaded magazine into the magazine feedway. Push upward until the magazine catch engages and holds the magazine. Rap the base of the magazine sharply with the heel of the hand to ensure positive retention. Then release the bolt by depressing the upper portion of the bolt catch as previously described. The bolt, as it rides forward, will chamber the top round

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20
Q

Discuss unloading the M4.

A

To unload the rifle and make it safe, place the selector lever on the SAFE position and remove the magazine by pressing the magazine catch button. Pull the charging handle to the rear ejecting any round from the chamber. Inspect the chamber and receiver to ensure that it is clear.

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21
Q

Discuss loading the M9 service pistol.

A

Hold the pistol at the raised position. Insert a magazine loaded with from one to seven rounds of ammunition. Grasp the slide with the left hand. Pull the slide fully to the rear, release, and press the safety lock up to the SAFE position with the left forefinger. Left-handed personnel should reverse the hand positions for this procedure.

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22
Q

Discuss unloading the M9 service pistol.

A

To unload the pistol, hold it at the raised pistol position. Press the magazine catch and remove the magazine. If the slide is in the forward position, pull the slide to the rear, and push the slide stop up. Inspect the chamber to ensure that the pistol is clear. Press the slide stop down, allowing the slide to go forward

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23
Q

What are the six types of grenades?

A

M-67 Fragmentation
MK-1 Illuminating
M-25A2 Chemical
M-14 Incendiary
M-8 Smoke
M-57 Practice / Training

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24
Q

Discuss hand grenade safety procedures.

A

Do NOT remove the safety pin on a grenade until you are ready to throw it.
You or anyone else not experienced in ordnance disposal, must not recover, handle, or otherwise tamper with dud grenades.
If you should accidentally drop a casualty producing hand grenade after pulling the safety pin, shout GRENADE to alert other personnel in the area and ensure that the grenade is picked up and thrown in a low arc into a safe area.

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25
Q

Discuss the range of a Claymore mine.

A

60 degree fan shaped pattern
50 meters Killing zone (Optimum range)
100 meters Moderately effective
250 meters Dangerous

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26
Q

What and how much explosive is used in a claymore mine?

A

1 ½ pounds of C4

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27
Q

How long is the firing wire for the claymore mine?

A

100 feet

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28
Q

What is the nomenclature for the claymore mine’s firing device?

A

M57 Firing Device

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29
Q

What type of weapon is the claymore mine?

A

The claymore mine is an antipersonnel mine.

30
Q

Describe the 240B machine gun.

A

The M240B is a general-purpose machine gun. It can be mounted on a bipod, tripod, aircraft, or vehicle. The M240B is a belt-fed, air-cooled, gas-operated, fully automatic machine gun that fires from the open bolt position. Ammunition is fed into the weapon from a 100-round bandoleer containing a disintegrating metallic split-link belt. M240B and barrels can be changed quickly as the weapon has a fixed head space. However, barrels from different weapons should not be interchanged. The bore of the barrel is chromium plated, reducing barrel wear to a minimum.

31
Q

Discuss the procedures for ensuring that the 240B machine gun is cleared

A

The gunner places the safety on “F.”
With his palm facing up, he pulls the cocking handle to the rear. This puts the bolt assembly in the rear position.
When the bolt is held to the rear by the sear, he manually returns the cocking handle to the forward position, places the safety on “S.”
He raises the cover assembly and ensures that the feed tray, receiver assembly, and chamber are clear.
He lowers the feed tray, places the safety on “F,” and pulls the cocking handle to the rear.
While maintaining rearward pressure, he pulls the trigger and eases the bolt assembly forward.

32
Q

Discuss the unloading procedure for the 240B machine gun.

A

The gunner unloads the M240B by pulling and locking the bolt to the rear position, if it is not already there.
He manually returns the cocking handle to its forward position.
He places the safety on “S.”
He raises the cover assembly and removes any ammunition or links from the feed tray.
He performs the four-point safety check.

33
Q

Discuss the loading procedure for the 240B machine gun.

A

The gunner makes sure the weapon is cleared.
He places the first round of the belt in the feed tray groove, double link leading, with open side of links face down.
He holds the belt about six rounds from the loading end, while closing the cover assembly.
Ensure that the round remains in the feed tray groove, and close the cover assembly.

34
Q

State the rates of fire for the 240B machine gun.

A

Maximum Range 3725 meters
Maximum Effective Range Area 1100 meter (tripod)
800 meters (bipod)
Point 800 meters (tripod)
600 meters (bipod)

35
Q

What is the range of grazing fire for the 240B machine gun?

A

600 meters

36
Q

Define “Grazing Fire”

A

The center of the cone of fire does not rise above 1 meter. The entire cone of fire does not rise more than 1.8 meters.

37
Q

Define “FPL”

A

Final Protective Line: An FPL is a predetermined line along which grazing fire is placed to stop an enemy assault. If an FPL is assigned, the machine gun is sighted along it except when other targets are being engaged. An FPL becomes the machine gun’s part of the unit’s final protective fires. An FPL is fixed in direction and elevation; however, a small shift for search must be employed to prevent the enemy from crawling under the FPL and to compensate for irregularities in the terrain or the sinking of the tripod legs into soft soil during firing. Fire must be delivered during all conditions of visibility.

38
Q

Define “PDF”

A

Principal Direction of Fire: A PDF is a direction of fire assigned priority to cover an area that has good fields of fire or has a likely dismounted avenue of approach. It also provides mutual support to an adjacent unit. Machine guns are sighted using the PDF if an FPL has not been assigned. If a PDF is assigned and other targets are not being engaged, machine guns remain on the PDF. A PDF has the following characteristics.
(1) It is used only if an FPL is not assigned; it then becomes the machine gun’s part of the unit’s final protective fires.
(2) When the target has width, direction is determined by aiming on one edge of the target area and noting the amount of traverse necessary to cover the entire target.
(3) The gunner is responsible for the entire wedge-shaped area from the muzzle of the weapon to the target, but elevation may be fixed for a priority portion of the target.

39
Q

Describe the safety on the 240B machine gun.

A

The safety mechanism is located on the pistol grip just behind the trigger well. When the safety is pushed to the right, the letter “S” is visible indicating the weapon is on safe. When pushed to the left, the letter “F” is visible on the safety indicating the weapon is on fire. The safety can only be engaged when the bolt is in the rear position. On the “S” position, the bolt cannot be released to go forward.

40
Q

What are the different ammunition types that can be use with the 240B machine gun?

A

7.62 mm Ball, Armor Piercing, Tracer, Dummy, Blank

41
Q

What are the different mounts for the 240B machine gun?

A

Bipod and Tripod (M122)

42
Q

What are the members of a gun team?

A

Machine gun team leader, gunner, ammunition carrier number 1, ammunition carrier number 2

43
Q

What are the members of a gun team?

A

Machine gun team leader, gunner, ammunition carrier number 1, ammunition carrier number 2

44
Q

Describe the MK19B machine gun.

A

The MK 19 Machine Gun is air cooled, blowback operated (with advanced primer ignition), belt fed, and can mount on the ground or on a vehicle.

45
Q

Describe the proper employment of a machine gun.

A

To be most effective, a machine gun should be employed from a tripod mount on the ground, using a traversing and elevating (T&E) mechanism. While a machine gun may be employed from a vehicle mount while on the move, this lessens the accuracy of fire and generally decreases the survivability of the vehicle and personnel. They are most effectively employed in concert with other weapons in an attempt to achieve a synergistic effect where the fires of one weapon compliment or augment the fires of another.

46
Q

State the rates of fire for the MK19 machine gun.

A

Sustained 40 rounds per minute
Rapid 60 rounds per minute
Cyclic 325 to 375 rounds per

47
Q

What is the maximum range, maximum effective ranges, and arming range of the MK19 machine gun?

A

Maximum Range 2212 meters
Maximum Effective Range Area 2212 meters
Point 1500 meters
Arming Range 18 – 30 meters

48
Q

Describe the safety on the MK19 machine gun.

A

Thumb safety: Activates the safety slide inside the sear assembly. The safety slide blocks the sear from being depressed by the operator as long as the safety is on ‘S’ (SAFE).
Charger handle assemblies down: The safety slide on the inside edge of each charger arm slides rearward as the handle assembly is rotated down. With a handle assembly down, the bolt sear cannot come in contact with the forward end of the receiver to release the firing pin, so firing cannot occur. One or both handle assemblies may be lowered. Remember “CHARGER HANDLE ASSEMBLY DOWN” is the action for a runaway gun.

49
Q

What are the different ammunition types that can be use with the MK19 machine gun?

A

40 mm High Explosive Dual Purpose (HEDP), High Explosive (HE), Training / Practice (TP), Dummy, Practice

50
Q

Describe the characteristics of the caliber .50 M2HB, Browning Machine Gun (BMG).

A

The M2 is a belt-fed, recoil-operated, air-cooled, crew-served machine gun. The machine gun is capable of firing single-shot and automatic. It is capable of right and left-hand feed.

51
Q

What is the maximum range and maximum effective range of the M2HB?

A

Maximum Range 6767 Meters (7400 yards)
Maximum Effective Range 1829 Meters (2000 yards)

52
Q

State the rates of fire for the M2HB machine gun.

A

Sustained Less than 40 rounds per minute fired in bursts of six to nine rounds, at 10-15 second intervals. Change barrel at the end of the firing session or if the barrel is damaged
Rapid Greater than 40 rounds per minute fired in bursts of six to nine rounds, at 5-10 second intervals. Change barrel at the end of the firing session or if the barrel is damaged
Cyclic 400 to 550 rounds per minute Change barrel at end of firing session, or if the barrel is damaged

53
Q

When should headspace and timing be checked on the M2HB? Why is headspace and timing important? What should you do if you are unable to obtain a correct headspace or timing?

A

Headspace and timing should be checked and adjusted before firing weapon, after assembling weapon, and after replacing barrel.
Improper headspace and timing can cause malfunctions, damage to gun, and injury to personnel.
If headspace or timing cannot be obtained, turn in weapon to next higher level of maintenance

54
Q

Describe the characteristics of the 40mm M203 grenade launcher.

A

The M203 is lightweight, compact, breech loading, pump action, single shot, manually operated.

55
Q

What is the maximum range and maximum effective ranges of the M203.

A

Maximum Range 400 meters
Maximum Effective Range Area 350 Meters
Point 150 Meters

56
Q

Describe the ammunition for the M203.

A

40mm High Explosive (HE) or Training Practice (TP)

57
Q

Describe the characteristics of the M500.

A

The M500 is a manually operated (pump action), repeating, magazine fed, shoulder fired weapon.

58
Q

Discuss loading the M500.

A

Place weapon on “Safe”
Assure fore end is fully forward
Turn the shotgun over and insert cartridge into magazine until magazine is full loaded
Depress action lock and move fore end full to the rear and forward again, chambering the first round. Another round can be added to the magazine if desired.

59
Q

Discuss the ammunition for the M500.

A

12 gauge, 2-3/4 inch, # 00 buck shot

60
Q

How long is the M500?

A

39.5 inches (Barrel – 18.5 inches)

61
Q

What is the ammunition capacity of the M500?

A

6 total (5 in the magazine, 1 in the chamber)

62
Q

Discuss the safety on the M500.

A

There is a slide safety is located on top of the receiver. When in the rear position the safety prevents the firing of the weapon.

63
Q

What must be included in a range card for a crew served weapon?

A

The machine gun number
Unit designation
Date and time the range card was prepared
The machine gun position
A magnetic North arrow
The left and right lateral limits
The assigned PDF or FPL
Magnetic azimuth of the machine gun to a prominent terrain feature
Dead space
Areas signifying grazing fires
Specified targets numbered in sequence with their direction in mils, elevation in mils, and range in meters.

64
Q

Discuss the purpose of a range card.

A

A range card is a rough sketch or drawing which serves as both a record of firing data and a document for defensive fire planning. One copy remains at the gun position as a record of firing data. The gunner uses the card to recall the data to fire on predetermined targets and as an aid in estimating ranges to other targets during good visibility. The other copy is sent to the next higher headquarters (usually the company), who use it to organize the defense and prepare a fire plan sketch.

65
Q

Discuss the integration of the weapons systems into an overall defensive fire plan.

A

Machine guns have capabilities and limitations just as any weapon system does. Machine guns though powerful weapons do not stand alone. They are most effectively employed in concert with other weapons in an attempt to achieve a synergistic effect where the fires of one weapon compliment or augment the fires of another. The capabilities and limitations of every available weapon must be considered in order to achieve this in a tactical plan.

66
Q

What is the purpose of the AN/PVS-7C

A

Individual personnel night vision goggles

67
Q

What is the purpose of the AN/PVS-12A

A

Individual weapon night vision for the M-16 and M240B

68
Q

What is the purpose of the AN/PVS-20

A

Individual weapon night vision for the M-2 and MK19

69
Q

Describe the classes of fire with respect to the ground.

A

Grazing Fire Fire approximately parallel to the ground where the center of the cone of fire does not rise above 1 meter. When firing over level or uniformly sloping terrain, the maximum extent of grazing fire obtainable for the M240B is approximately 600 meters. The maximum extent of grazing fire obtainable for the M2 .50 cal is approximately 700 meters.
Plunging Fire Fire in which the angle of fall of the rounds, with reference to the slope of the ground, is such that the danger space is practically confined to the beaten zone and the length of the beaten zone is materially shortened.

69
Q

Describe the classes of fire with respect to the gun.

A

Fixed Fire Fire delivered on a point target. Little or no manipulation is required. After the initial burst the gunner will follow any change or movement of the target without command.
Traversing Fire Fire distributed against a wide target requiring successive changes in the direction (left and right) of the gun.
Searching Fire Fire distributed in depth by successive changes in the elevation of the gun.
Traversing and Searching Fire Fire delivered both in width and depth by changes in direction and elevation.

SCWS Study Guide Common Core (12 decks)

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