How Does A Hand Gun Works ?

A handgun is a weapon generally used for security purpose. Hand Gun parts  are designed to discharge projectiles depending upon the amount of velocity need. Projection shot (bullet) by gun varies according to design but is usually affected by the action of gas pressure, either produced by the rapid combustion of a propellant or compressed and stored by mechanical means.

Basic Parts of a Handgun :-

The action, also known as the trigger group, contains the parts that fire the cartridges. Several types of actions are used in modern handguns.


The frame is a metal housing that also serves as the handle (grip) of the handgun. All other parts are contained within it or connected to it.

The barrel is the metal tube that the bullet travels through. The handgun barrel is much shorter than a rifle or shotgun barrel because the gun is designed to be shot while being held with one or two hands, rather than being placed against the shooter's shoulder.

Muzzle = Front. Or, more specifically, the muzzle is the opening on the front of a firearm. This is where the projectile comes out of.

The Trigger:-
The trigger is the part of a firearm that files the round. On certain guns, like single action revolvers, the hammer has to be “cocked” – or pulled back into position – before the trigger can be pulled. In those cases, the pull of the trigger releases the hammer to fire the round. With most other guns, the trigger pull is considered double action in that pulling the trigger both cocks the hammer and releases it thereby firing the gun.

The Hammer :-
The hammer is the part of the firearm that makes contact with the bullet primer to ignite the powder and propel the bullet out of the muzzle . For most handguns and some rifles, the hammer is visible on the outside of the firearm. However, for most rifles and shotguns and some pistols, the hammer is internal.
With some guns, the hammer doesn’t even contact the primer directly at all. In those cases, a firing pin is used. The firing pin is struck by the hammer driving it forward into the bullet’s primer to fire the round.

The Breech :-
Simply, the breech is the back. With early firearms, the technology limited how guns were loaded. For centuries, guns could only be loaded through the muzzle and they were known as “muzzle-loading” guns. Later, as technology improved, guns could be loaded through the breach and were referred to as “breech-loading”. 

Different guns have different firing mechanisms.Bullets, however, generally work the same way. A modern bullet cartrige contains 5 parts:

1. The bullet itself (this is the part that actually shoots out of the barrel)
2. The case
3. The propellant, usually gunpowder
4. The rim
5. The primer

What most people think of as “bullets” are actually “cartridges” that include the bullet, a casing, powder, and a primer. The primer is first ignited which causes a small explosion, which then burns the rest of the powder, creating lots of pressure that moves the bullet out of the gun. The bullet is just the projectile that shoots out of a gun, not the entire object.
When you pull the trigger on a handgun, the hammer snaps forward and a pin strikes the primer(5). This creates a spark, which ignites the gunpowder(3), and the explosion propels the bullet(1) out of the gun. In a semi-automatic pistol the extractor then grabs hold of the rim(4) and ejects the empty casing from the gun .

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