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AFTE Glossary > A > Flashcards

A Flashcards

1
Q

What is a device found in some firearms that transfers kinetic energy from one part of the mechanism to another by increasing the speed of action

A

Accelerator

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2
Q

What is a cartridge loaded with a sub-caliber bullet in a caliber-sized sabot?

A

Accelerator

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3
Q

What is the inadvertent discharge of a firearm as a result of some sort of failure on the part of the firearm?

A

Accidental Discharge

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4
Q

What is an accidental discharge often caused by?

A

By a safety device that was broken, deficient, compromised or missing from the firearm

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5
Q

The measure of how close the fired shots are to the intended target

A

Accuracy

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6
Q

What is an estimated or empirically determined number of rounds that can be fired in a particular gun of a particular caliber before it fails to meet an accuracy specification?

A

Accuracy Life

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7
Q

What can cause wide variations to occur during measurement of accuracy life?

A

Caliber, ammunition characteristics, firing schedules, maintenance and firearm design

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8
Q

What is the term used with firearms that have been subjected to special fitting and operations to improve accuracy?

A

Accurize

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9
Q

Define Action

A

It’s the working mechanism of a firearm.

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10
Q

What type of action feeds cartridges, fires, extracts and ejects cartridge cases as long as the trigger is fully depressed and there are cartridges in the feed system?

A

Automatic action. AKA fully automatic, full auto, machine gun.

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11
Q

A type of dropping block, single shot action.

A

Ballard Action

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12
Q

What type of action is found in some firearms where the weight of the bolt, the intertia of a component and a mechanical delay is the main locking force and no mechanical locking of the breech occurs?

A

Blowback Action

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13
Q

These type of firearms directly utilize the breech pressure exerted on the head of the cartridge case to actuate the mechanism

A

Blowback

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14
Q

What type of action is deigned in firearms where the breech block is stationary and the barrel moves forward by gas pressure to open and eject the cartridge and cycle the action?

A

Blow-forward Action

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15
Q

What type of action: A firearm in which the breech closure is in line with the bore at all times, manually reciprocated to lead, unload and cock, and is locked in place by breech bolt lugs and engaging abutments

A

Bolt Action

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16
Q

What type of action is designed in which the hammer and hammer spring(s) are located within the frame and trigger assemble thats located in the lower tang?

A

Box Lock Action

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17
Q

Where are box lock actions generally found?

A

On doble barrel shotguns such as Parker, Fox, Stevens, Winchester Models 21 and 24

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18
Q

What is another name for Break-open action?

A

Hinged frame action

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19
Q

What type of action is a mechanism which a single pull of trigger first cocks and then releases the hammer or striker?

A

Double Action

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20
Q

What is another name for Dropping Block action?

A

Falling Block Action

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21
Q

What type of action: a single shot lever actuated mechanism in which the breechblock slides vertically when the lever is moved to expose or lock the breech?

A

Falling Block/Dropping Block action

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22
Q

A design where the barrel(s) is pivoted on the frame. When the action is open, the barrel(s) may pivot up, down, or sideways for loading or unloading. When the action is closed, the breech of the barrel(s) swings against the standing breech. Opening is normally
accomplished by movement of a top-, side-, or under-lever.

A

Hinged frame action (Break-open action)

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23
Q

A design that incorporates aspects of both single action and double action systems.
For example, a pistol action which requires the slide to retract and set or partially cock the action, and the trigger to further cock and release the hammer or striker.

A

Hybrid Action

24
Q

A design wherein the breech mechanism is cycled by an external lever generally below the receiver.

A

Lever Action

25
Q

A hammerless, single shot rifle mechanism, lever actuated, in which the movement of the breechblock is entirely within the receiver and pivots at the rear.

A

Martini Action

26
Q

What is another name for Pump action?

A

Slide Action

27
Q

A firearm, usually a handgun, with a cylinder having several chambers so arranged as to rotate around an axis.

A

Revolver Action

28
Q

A design in which a breechblock and hammer each rotate about their separate transverse pins in the receiver.
The two members are swung rearward, away from the barrel breech to load the mechanism, or extract a cartridge case.
To fire a cartridge, the breechblock is closed and locking is accomplished by the falling hammer engaging an abutment on the breechblock

A

Rolling Block Action

29
Q

A repeating firearm that requires a separate pull of the trigger for each shot fired, and which uses the energy of discharge to perform a portion of the operating or firing
cycle.

A

Semiautomatic Action

30
Q

Other names of semiautomatic actions

A

Autoloader or self-loader

31
Q

A design in which the firing mechanism is attached to a sideplate rather than being integral with the frame.

A

Sidelock Action

32
Q

An action requiring the manual cocking of the hammer or striker. Sufficient pressure on the trigger then releases the firing mechanism.

A

Single Action

33
Q

A firearm with no means in the mechanism for storing or loading more than a single cartridge housed in the chamber of the barrel.

A

Single Shot Action

34
Q

An action which features a movable forearm that is manually actuated in a motion parallel to the barrel by the shooter. Forearm motion is transmitted to a breech bolt assembly which performs all the functions of the firing cycle assigned to it by the design.

A

Slide Action

35
Q

What is another term used for slide action?

A

Pump Action

36
Q

What is another term used for Hinged Frame Action?

A

Tip up action
Top Break action
Under-Lever action

37
Q

An action in which a top hinged breechblock pivots up and forward to open. Locking on this action is accomplished by a cam located at the rear of the breechblock that fits into a mating recess

A

Trap Door Action

38
Q

What is another term for Trap Door Action?

A

Cam lock

39
Q

A lens made up of a combination of glasses having different focal powers so that the image formed is free of unwanted colors.

A

Achromatic Lens

40
Q

A member or members designed to have considerable rigidity, which are used to connect and thus transmit the movement of the forearm or gas system to the breechblock.

A

Action Bar

41
Q

Part of the firing mechanism in certain automatic firearms which slides forward and back in preparing each cartridge to be fired. Component operated either manually or mechanically which transmits certain action or energy to other components which are dependent upon movement of the actuator in order to function.

A

Actuator AKA Trigger Actuator

42
Q

A device used to alter the use or function of a firearm.

A

Adapter

43
Q

Most general use of an adapter?

A

To permit using smaller caliber ammunition in a firearm designed for a larger caliber

44
Q

The act of aligning the sights of a firearm on a target.

A

Aim

45
Q

A point on the target upon which the sights are aligned.

A

Aiming Point

46
Q

A gun that uses compressed air or gas (carbon dioxide) to propel a projectile.

A

Air Gun

47
Q

The force placed on an object by the atmosphere in opposition to forward motion.

A

Air Resistance AKA Aerodynamic drag

48
Q

The volume in a loaded cartridge not occupied by the propellant, bullet, wads, or shot

A

Air Space AKA Ullage

49
Q

A mixture of two or more metals fused or melted together to form a new material.

A

Alloy

50
Q

Examples of alloy

A

copper and zinc

51
Q

The effect on velocity, and therefore projectile trajectory and shot pattern, caused by changes in atmospheric density due to altitude.

A

Altitude Effect

52
Q

One or more loaded cartridges consisting of a primed cartridge case, propellant, and with or without one or more projectiles.

A

Ammunition AKA Fixed ammunition/live ammunition

53
Q

A code number and/or letter(s) usually found on the carton that identifies a particular quantity of
ammunition for its manufacturer.

A

Ammunition Code Number

54
Q

A method of distinguishing the various gauges of shotshells and types of metallic ammunition by
color or plating.

A

Ammunition Color Code

55
Q

Typically refers to a single production run of ammunition and is designed with a code made up of numerical and/or alphabetical digits

A

Ammunition Lot

AFTE Glossary (1 decks)

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