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Additonal Weapons Info > Basic Ops > Flashcards

Basic Ops Flashcards

1
Q

What are the three Feeding Mechanisms?

A

Magazine
Belts
Clips

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2
Q

What is a Magazine?

A

A metal or plastic box that feed by spring tension

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3
Q

What are the two types of Box Magazines?

A

Staggered Box

Inline Box

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4
Q

Explain a Staggered Box Magazine.

A

Rounds that are Staggered side-by-side in a Magazine

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5
Q

Explain an Inline Magazine

A

Rounds that are one on top of the other in the Magazine

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6
Q

Explain a Drum

A

Circular in shape, usually has multiple rows of cartridges. Attaches to the top or bottom of the weapon

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7
Q

Explain a Pan

A

Cartridges are stored perpendicular to the axis of rotation, rather than parallel. Usually mounted to the top of firearm

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8
Q

Explain a Belt

A

Used in machine guns because of their tactical role and high rate of fire.

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9
Q

Split Link Belt

A

Does not fully encase the cartridge

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10
Q

Fully Encased Metallic Link Belt

A

Completely surrounds a cartridge

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11
Q

Non-Disingrating Metallic Link Belt

A

Belts that do not come apart as each round is withdrawn

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12
Q

Disintegrating Metallic Link Belt

A

Comes apart as each round is withdrawn

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13
Q

Explain a Clip

A

A device used to rapidly load a magazine or weapon

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14
Q

What are the two types clips

A

En-Bloc Clip

Striper Clip

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15
Q

What are the five types of Cartridges

A 
Rimmed
Semi-Rimmed
Rimless
Belted
Rebated
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16
Q

What is a Rimmed Cartridge

A

A Cartridge which has a head larger in diameter than the body, forming a rim or flange.

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17
Q

What is a Semi-RImmed Cartridge

A

A cartridge that has a head only slightly larger in diameter than the body, with a shallow groove machined around the circumference of the body forward of the head to provide an extractor gripping surface.

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18
Q

What is a Rimless Cartridge

A

A cartridge that has a head the same diameter as the body. With a groove machined around the circumference of the body forward of the head to provide an extractor gripping surface.

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19
Q

What is a Belted Cartridge

A

A Cartridge of the rimless type which has a think band or belt around the body just forward of the extractor groove to provide greater strength of that portion of the case.

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20
Q

What is a Rebated Cartridge

A

A Cartridge that has a base smaller than the case

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21
Q

What are the five types of Firing Pins

A 
Free-Floating
Inertia
Percussion
Striker
Fixed
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22
Q

Explain a Free-Floating Firing Pin

A

Larger mass strikes the Firing Pin. Longer than its carrier; no spring is used on either forward or rearward movement of the firing pin. (M1 Garand & Carbine, M14, M16, M4, AK Rifle, RPK, SVD)

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23
Q

Explain an Inertia Firing Pin

A

Forward energy is created when the hammer strikes the firing pin. As the pin is driven forward by the strike of the hammer, the spring is compressed, creating the energy needed to reset the firing pin. (M1911A1, USP, BHP)

24
Q

Explain a Percussion Firing Pin

A

The firing pin is driven forward by the Force of a compressed spring and is Retracted by the cam action that cocks the Weapon (M60, M2HB).

25
Q

Explain a Striker Firing Pin

A 
A firing pin which is carried inside the bolt and receives its forward momentum from its own spring, when activated by 
the trigger (squeezed) not struck by the hammer (P7).  A squeeze-cocking system is what compresses the firing pin spring.
26
Q

Explain a Fixed Firing Pin

A

It’s own mass provides the energy. A protrusion machined into the face of the bolt/breech which punctures the primer
when the bolt has fully chambered the cartridge. Found in most blowback operated submachine guns (Uzi).

27
Q

There are only three ways Firing Pins receive their energy

A
  1. A larger mass strikes them (Free Floating)
  2. A spring provides their energy ( Inertia, Percussion & Striker)
  3. Their own mass provides the energy (Fixed)
28
Q

What are the two types of Primers

A

Boxer

Berdan

29
Q

Explain the Boxer Primer

A

The Boxer has a cup shaped igniting system having the anvil and flash powder built in with one flash hole in the cartridge case.

30
Q

Explain the Berdan Primer

A

The Berdan contains only the flash powder, the anvil is part of the cartridge case and has two flash holes. Non-reloadable.

31
Q

What are the eight Locking Systems

A 
Rotating Bolt
Rotating Barrel
Rising/Lowering Bolt
Rising Barrel
Roller
Locking Block
Locking Flaps
Swinging Bolt
32
Q

What is a Rotating Bolt

A

The Bolt Rotates left or right to lock behind the breech

33
Q

What is a Rising/Lowering Bolt

A

The rear of the bolt rises or lowers into a locking recess of the receiver.

34
Q

What is a Roller

A

Rollers push out of the left and right sides of the bolt to lock into the breech

35
Q

What is a Rising Barrel

A

The bare rises up into the slide to lock the barrel and slide together. (Also known as “Tilting Barrel” or
“Browning”)

36
Q

What are Locking Flaps

A

Loose plates located on the bolt swing out looking into recesses in the receiver

37
Q

What is a Swinging Bolt

A

The rear of the bolt swings out of line with the bore into a locking recess inside the receiver.

38
Q

What is a Locking Block

A

A cam that pivots up into a locking recess

39
Q

What are the Eight Operating Systems

A 
Bolt Action
Blowback
Delayed Blowback
Recoil
Recoil with Gas Assist
Gas Operation
Manual Pump
Revolving Cylinder
40
Q

Explain Bolt Action

A

The operator manually retracts the bolt to eject the spent cartridge and to chamber a new round by pushing the bolt forward

41
Q

Explain Blowback

A

Blowback operated weapons have no locking system. Exploding rounds blowback the cartridge case, forcing the bolt to the rear and cartridge out of the weapon. A new round is chambered as the bolt moves forward.

42
Q

Explain Delayed Blowback

A

These weapons have locking systems. There is a delay long enough for the round and excess gases to leave the muzzle before the bolt is fully unlocked.

43
Q

Explain Recoil

A

Recoil works by pressure from the fired round. The Breach is locked so that when the round is fired, the barrel moves to the rear with the breechblock or bolt in place. The breechblock remains to the rear while the barrel is forced forward by the spring. After the barrel is fully forward the breechblock is released, moving forward to chamber another round.

44
Q

What are the three types of Recoil Systems

A

Long
Short
Inertia

45
Q

Explain Long Action Recoil

A

The barrel and bolt recoil all the way back as a complete unit. Once the rearward movement is absorbed by its recoil spring, it unlocks from the bolt and returns to battery. After the bolt compresses the spring, it is held in the rearmost
position until the barrel returns to battery.

Long recoil systems have a distinct “Double
Recoil” feel to them.

Used primarily in Browning’s Auto-5 shotgun
design.

46
Q

Short Action Recoil

A

Short recoil operation differs from long recoil operation in that the barrel and bolt recoil only a short distance before unlocking and “separating.” The barrel stops quickly and the bolt continues rearward, compressing the recoil spring and completing the other cycles of operation.

During the last portion of its forward travel, the bolt locks into the barrel and pushes the barrel into battery.

Used in most modern day pistols designs (M9,
BHP, M1911A1) as well as the M2HB.

47
Q

Inertia Action Recoil

A

The Inertia Action recoil system is the reversal of the other designs (Long, Short). The Inertia system uses nearly the entire firearm as the recoiling component with only the bolt remaining stationary during firing.

Once fired, the recoil spring returns to its uncompressed state and pushes the bolt body backwards with sufficient force to cycle the action. The bolt body unlocks, then retracts the bolt head and spent round; ejecting the cartridge, cocking the hammer, and continuing the cycle of operation.

Because of this, the operating system is used only in firearms with a heavy recoil (Shotguns;
Benelli Super 90)

48
Q

Recoil with Gas Assist

A

Operates with a recoil booster attached to the muzzle end of the weapon to trap gas, which aids in moving the barrel to the rear.

Internal piston taps on the Barrel to assist in Unlocking the Bolt; increasing the rate of fire and reliability.

49
Q

Gas Operation

A

Gas pressure within the barrel is tapped by a gas port inside the barrel, using the energy to force the operating parts to the rear.

50
Q

What are the three types of Gas Systems?

A

Gas Blast
Gas Tappet
Gas Assist

51
Q

Gas Blast

A

Gas goes down the gas port into the gas cylinder and makes contact with the gas piston directly attached to the operating rod or slide.

52
Q

Gas Tappet

A

Gas goes down the gas cylinder and makes contact with the gas piston which makes contact with the operating rod or slide.

The gas piston and operating rod or slide are separate components.

53
Q

Gas Direct

A

Gas goes out of the gas port into the gas tube and is carried directly to the bolt or bolt carrier.

54
Q

Manual Pump

A

Operator is required to pull the slide to the rear, extracting the fired round, and to push the slide forward chambering a new one.

55
Q

Revolving Cylinder

A

Each round is fired when the trigger is pulled. The cylinder rotates aligning on the next chamber with the barrel so that the next round can be fired.

Additonal Weapons Info (16 decks)

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