3.2 TYPES OF FIREARM Flashcards by Kiecelyn Osea

TYPES OF GUNS ACCORDING TO CONSTRUCTION OF THE GUN BARREL

SMOOTH BORE FIREARM
RIFLED BORE FIREARM

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These are firearms in which the bore does not have rifling from the breech to the muzzle end. Ex. Shotgun and Muskets.

Smooth Bore Firearms

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is the most common type of
Smooth bore firearn nowadays.

shotgun

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A few meters from the barrel of the shotgun, the projectiles are still compact. As they travel further, the said projectiles gradually separate from each other but still in the same direction and speed.

SMOOTH BORE FIREARM

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is the term used for the entire shot charge when moving through the air.

Pattern

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These are firearms in
which the bore has rifling.The rifling is composed of lands and grooves. The land refers to the raised portion while the groove is the depressed part inside the bore of the firearm.

Rifled Bore Firearms

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is designed to cause the bullet to rotate either left or right depending on the manufacturer of the firearm

rifling

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The purpose of having a rifling in the gun barrel is to cause the bullet to gain stability during its flight. This condition is called

GYROSCOPIC STABILITY

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TYPES OF FIREARM ACCORDING TO PROJECTILES PROPELLED

Artillery
Small Arms

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These are types of weapons in which the diameter of the bore is greater than one inch. Ex. Cannons, Bazooka.

Artillery

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These are types of firearms in which the diameter of the bore is less than one inch. Ex. Machine gun, Shoulder arms, Hand gun

Small Arms

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These are firearms that have a magazine.

Repeating Firearm

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The repeating firearms are divided into two types namely;

Automatic Firearm
Hand operated firearm

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It also refers to firearms intended to be or primarily designed for individual use
extract and eject the cartridge out from the firearm
or that which is generaiiy considered to mean a weapon intended to be fired from the
do shoulder. which are not capable of fully automatic bursts of discharge (Sec 3 RA
10591). Ex: Pistol, Revolver, Rifle, and shotgun

Small Arm

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TYPES OF FIREARM ACCORDING TO MECHANICAL CONTRACTIONS

Single-Shot Firearm
Repeating Firearm
Automatic Firearm
Bolt Action Firearm
Slide or Pump Action Type
Lever Action Type

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This type of firearm will not automatically load fresh cartridge after firing. This is a type of firearm that requires the firer to manually cock the gun to cycle the operation.

Repeating Firearm

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These are firearms that automatically load fresh ammunition into its chamber after firing. Thus, there is no need for the firer to cock again for the next fire.

Automatic Firearm

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Automatic firearms are divided into two categories, namely,

Full Automatic Firearm
Semi-automatic Firearm

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are automatic firearms that can continuously project
several rounds by a single squeeze of the trigger.

Full-Automatic Firearms

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are automatic firearms that can only project one projectile by a single squeeze of the trigger.

Semi-Automatic Firearms

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This type of firearm has a magazine under the bolt. The tubular magazine is one of the
types of compartments used for its cartridges. To open the breech, move the bolt handle upward, then draw it to the rear. Bringing the bolt handle forward, allows the bolt to carry another fresh ammunition and load to the chamber. Finally, move the handle downward to lock the breech and
prepare for the subsequent firing.

Bolt Action Type

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This type of firearm can be operated through the manipulation of the for-end. It can be
done by bringing the for-end back and forth. The backward movement of the for-end causes its bolt to be dragged backward. Likewise, this motion results in the extraction and ejection of the empty cartridge out from the firearm through the ejection port. On the other hand, the fresh ammunition from the tubular magazine will be carried by the bolt towards the chamber when the for-end is brought forward.

Slide Or Pump Action Type

The trigger guard of this firearm can be moved up and down The downward
manipulation of the trigger guard, opens the breech and further moves the bolt mechanism to the rear. This motion also extracts and ejects the case from the firearm. Fresh ammunition will be loaded to the chamber as the trigger guard is raised. This condition is now ready for firing

Lever Action Type

TYPES OF FIREARMS ACCORDING TO USE

Military Firearm
Pocket and Home Defense Firearms

Types of Military Firearm

Pistol Rifle Revolver Machine Guns

Types of Pocket and Home Defense Firearm

Pistol Rifle Revolver

Those types of fire arm that is unique in mechanism and construction

UNUSUAL OR MISCELLENEOUS TYPE

CLASS CHARACTERISTICS

Caliber, Number of lands and grooves, Width of lands, Width of grooves, Direction of twist, Pitch of Rifling, Depth of Grooves

it refers to the characteristics that are even before the manufacture of e firearm. These are factory specifications and within the control of man. These serve as e basis for identifying a certain group or class of firearm.

CLASS CHARACTERISTICS

This refers to the diameter of the bore which can be determined by measuring the two opposite lands. The land are the basis for measuring the caliber of the firearm since they are the remnants after rifling operation. The manufacturer could have met the actual caliber of the firearm prior to this phase in making the barrel

Bore Diameter or Caliber

There should be an equal number of lands and grooves in the barrel regardless of the manufacturer. If the bore has six lands, then there should also be six grooves.

Number of Lands and Grooves.

The elevated portions inside the bore of the barrel.

Lands

The depressed portions inside the bore of the barrel.

Grooves

Is distance between the grooves

Groove Diametes

is distance between the lands

Bore Diameter

the spiral cuts in a rifled bore

Grooves

The ridges of metal between the grooves in a rifled bore

Lands

This can be determined through measuring the distance from the edge of the land to its opposite edge.

Width of the Lands

It can be determined by measuring the distance from the corner of the groove to its opposite corner.

Width of the Grooves

It refers to the twist of rifling in the barrel. The twist of rifling may either be left or right. The examiner can identify the twist of rifling in the barrel by viewing either from the muzzle end or breech end since the results are the same

Direction of Twist

The act or process of making spiral grooves

RIFLING

A system of spinal grooves inside the barrel of a gun causing a bullet when fired to spin about its longer axis.

RIFLING

TYPES OF RIFLING

Small type, Carbine type, Smith and Wesson type, Browning type, Colt type, Webley type, Army type, Winchester type.

TYPES OF RIFLING 1. - 4RGL (four lands and grooves, the direction of twist is to the right and the width of grooves is equal to the width of lands) 2. - 3. - 4. - 5. 6. 7. 8.

Small Type

4RG2X (four lands and grooves, the direction of twist is to the right and the width of grooves is twice to the width of lands)

Carbine Type

5RGL (five lands and grooves, the direction of twist is to the right and the width of grooves is equal to the width of lands)

Smith and Wesson Type

6RG2X (six lands and grooves, the direction of twist is to the right and the width of grooves is twice the width of lands)

Browning Type

6LG2X (six lands and grooves, the direction of twist is to the left and the width of grooves is twice the width of lands)

Colt Type

7RG3X (seven lands and grooves, the direction of twist is to the right and the width of grooves is thrice the width of lands)

Webley Type

4RG3X (four lands and grooves, the direction of twist is to the right and the width of grooves is thrice the width of lands)

Army Type

6RG3X (six lands and grooves. the direction of twist is to the right and the width of grooves is thrice the width of lands)

Winchester Type

F. It refers to the number of inches or distance advanced by the rifling in one complete turn equal to 360 degrees. kung gaano kabilis yung ikot

Pitch of the Rifling.

This is always equal to the height of the land. To determine its measurement, take first the diameter between land to opposite land and groove to opposite groove respectively. Next, subtract the measurement of land to opposite land from the diameter of the groove to the opposite groove. Lastly, divide their difference by two (2). The result is the depth of the groove or the height of the land.

Depth of Grooves.

Those which are determinable only after the manufacture of the firearm. They are characteristics whose existence is beyond the control of man and which have random distribution. Their existence in a firearm is brought about by the tools in their normal operation resulting through wear and tear, abuse, militilations, corrosion, erosion and other fortuitous causes.

Individual Characteristics