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revolver 
Pistol with a rotary magazine, which usually contains six cartridge chambers.
barrel
Tubular part that guides the trajectory of the projectile.
hammer
Part that triggers the shot by striking the firing pin, which in turn strikes the cartridge primer causing the powder charge to explode.
butt
The bottom part of the gun that is used to hold and aim it.
trigger
Device that is pressed to fire the weapon.
trigger guard
Metal piece covering and protecting the trigger.
cylinder
Cylindrical rotary magazine that contains the cartridges.
muzzle
Opening through which the projectile leaves the barrel.
front sight
Metal aiming device attached to the front of the barrel.
