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Small Arms Terminology > Small Arms Terms > Flashcards

Small Arms Terms Flashcards

1
Q

8 Cycles of Function

A

Feeding, chambering, locking, firing, unlocking, extracting, ejecting, cocking

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2
Q

Feeding Mechanisms

A

Magazines
Belts
Clips

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3
Q

Magazines

A

Box - staggered (duel or single) or in line box
Drum
Pan

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4
Q

Belts

A

SLD MLB
SLND MLB
FED MLB
FEND MLB

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5
Q

Clips

A

En-Bloc clip

Stripper clip

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6
Q

Types of Cartridges

A 
Rimmed
Semi-Rimmed
Rimless
Belted
Rebated
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7
Q

Types of Firing Pins

A 
Free floating - larger mass strikes them
Inertia
Percussion - a spring provides energy
Striker
Fixed - own mass provides energy
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8
Q

Types of Primers

A

Boxer - one flash hole

Berdan - two flash holes

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9
Q

Locking Systems

A 
Rotating bolt
Rising/lowering bolt
Rollers
Rising barrel 
Locking flaps
Swinging bolt
Locking block
Rotating barrel
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10
Q

Operating Systems

A 
Bolt action
Blowback
Delayed blowback
Recoil
Recoil with gas assist
Gas operation (gas blast, tappet, direct)
Manual pump
Revolving cylinder
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11
Q

Ballistics

A

The science and study of the motion and impact of projectiles

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12
Q

Internal ballistics

A

The science of projectile motion within a firearm. It is most simply all that happens within a firearm from the instant the primer ignites until the bullet leaves the barrel.

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13
Q

External ballistics

A

Concerns the path of the bullet from the muzzle to the target

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14
Q

Terminal ballistics

A

Concerns what happens to the bullet after it hits the target and what the bullet actually does to the target upon impact

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15
Q

Battle sight

A

The range that allows you to hit the target between the throat and waist without sight adjustment. Exact ranges varies with caliber of weapon

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16
Q

Breechblock

A

A component that seals the breech and blocks gases from the fired cartridge

17
Q

Compensator

A

A device attached to the muzzle of a weapon designed to allow the gases following the bullet out of the muzzle to be deflected upward through slots in the top surface of the compensator. The lower portion of the compensator is solid, so that while some gas escapes through the top, gas is also pressing against the bottom. This pressure against the bottom of the compensator, pushing the compensator down, keeps the muzzle down. This action tends to retard the muzzle climb which is an instability factor in a full-automatic firing weapon.

18
Q

Disconnector

A

A device incorporated into the action of the weapons which prevents the firing of more than one shot for one pull of the trigger or which prevents the weapon from being fired until the action is fully closed or in battery

19
Q

Ejector

A

A cam or projection inside the receiver against which the cartridge case strikes and is thrown clear of the mechanism after it has been drawn from the chamber by the extractor

20
Q

Extractor

A

A component that engages the rim, or extractor groove of the cartridge case while the cartridge is in the chamber. After firing the extractor withdraws the case from the chamber when the action opens.

21
Q

Firing pin

A

The part of the firing mechanism that strikes or contacts the primer of the cartridge to cause ignition to fire the weapon

22
Q

Flash suppressor

A

A three or four pronged device attached to the muzzle of a weapon designed to cool the hot gases as it leaves the muzzle behind the round, cooling the gases reduces the flash

23
Q

Headspace

A

The distance from the breechblock to that part in the chamber which stops forward movement of the cartridge case

24
Q

Hybrids

A

Are muzzle devices that offer a combined reduction in flash signature, recoil, and muzzle flash

25
Q

Muzzle Brake

A

A device at the muzzle end of the weapon which deflects the emerging powder gases. The energy imparted by this act of deflection pulls the weapon forward to offset some of the rearward motion of recoil

26
Q

Rifling

A

A series of spiral groves in the bore of a barrel which imparts a spinning motion to the bullet as it travels the length of the barrel from the breech to the muzzle

27
Q

Sear

A

A component retained under spring tension that releases, by means of the trigger, either a hammer, firing pin or bolt

28
Q

Trigger

A

A finger actuated lever used to activate the firing mechanism firing the weapon

29
Q

Trigger bar

A

A connecting bar operating between the trigger and the sear. Nothing more than an extension of the trigger.

30
Q

Types of Firing

A 
Single action
Double action 
Semi-auto
Auto
Selective fire
31
Q

Muzzle Devices

A

Muzzle Brake
Flash Suppressors
Compensators
Hybrids

32
Q

Fluted chambers

A

Will leave horizontal burn makes on the spent cartridge case produced by the gases that cycles the weapon

33
Q

Trajectory

A

Rising Branch
Max Ordinate
Falling Branch

34
Q

Case

A

bullet diameter x cartridge case length mm

35
Q

Caliber

A

Distance across the bore of weapon, measured from land to land, expressed in hundredths inch

Small Arms Terminology (1 decks)

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