Basic Operations

Question 1

EIGHT STEPS IN THE CYCLE OF OPERATION

Answer 1

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

Question 2

FEEDING MECHANISMS

Answer 2

Magazine
Box (inline, staggered)
Pan
Drum

Belt
    Split link disintegrating
    Split link non-disintegrating
    Fully encased disintegrating
    Full encased non-disintegrating

Clip
En-bloc clip
Stripper clip (charger clip)

Question 3

FIVE TYPES OF CARTRIDGES

Answer 3

Rimmed, semi-rimmed, rimless, belted, rebated

Question 4

FIVE VARIETIES OF FIRING PIN

Answer 4

Free-floating, inertia, percussion, striker, fixed

Question 5

TWO TYPES OF PRIMERS

Answer 5

Boxer, berdan

Question 6

EIGHT LOCKING SYSTEMS

Answer 6

Rotating bolt, rising/lowering bolt, swinging bolt, locking flaps, locking block, roller, rising barrel, rotating barrel

Question 7

EIGHT OPERATING SYSTEMS

Answer 7

Bolt action, blowback, delaying blowback, recoil, recoil with gas assist, gas operation (direct, blast, tappet), manual pump, revolving cylinder

Question 8

THREE TYPES OF BALLISTICS

Answer 8

Internal, external, terminal

Question 9

BATTLE SIGHT

Answer 9

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

Question 10

BREECHBLOCK

Answer 10

A Component that seals the breech and blocks gases from the fired cartridge (bolts in rifles, slides in pistols).

Question 11

CALIBER

Answer 11

The distance across the bore of a weapon, measured from land to land expressed in hundredths of an inch.

Question 12

DISCONNECTOR

Answer 12

A device incorporated into the action of a weapon 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.

Question 13

EJECTOR

Answer 13

A cam of 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.

Question 14

EXTRACTOR

Answer 14

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.

Question 15

THREE TYPES OF MUZZLE DEVICES

Answer 15

Flash suppressor, compensator, muzzle brake

Question 16

HAMMER

Answer 16

The component of the firing mechanism that imparts a sharp blow to the firing pin to initiate the primer.

Question 17

HEADSPACE

Answer 17

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

Question 18

RIFLING

Answer 18

A series of spiral grooves 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.

Question 19

SEAR

Answer 19

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

Question 20

TRIGGER

Answer 20

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

Question 21

TRIGGER BAR

Answer 21

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

Question 22

FIVE TYPES OF FIRING

Answer 22

Single action, double action, semi-automatic, automatic, selective fire