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shotgun 
Shoulder weapon made up of a long barrel attached to a frame; it uses cartridges loaded with 24 g of lead having a diameter no greater than 2.5 mm.
trigger guard
Metal piece covering and protecting the trigger.
pistol grip
Narrow part for gripping and handling the weapon.
stock
Back part of the weapon that is held against the shoulder.
forearm
Frame made of wood on which the barrel is fitted.
trigger
Device that is pressed to fire the weapon.
ventilated rib
Strip with air holes for cooling the barrel of the shotgun.
barrel
Tubular part that guides the trajectory of the projectile.
muzzle
Opening through which the projectile leaves the barrel.
cheek piece
Movable and adjustable part against which the shooter can rest his cheek when shouldering the weapon.
cartridges
Ammunition consisting of a projectile (ball or lead), an explosive charge (gunpowder) and a primer collected inside a casing.
base
Metal base of the case that contains the primer.
plastic case
Cylindrical cover that contains the cartridge’s gunpowder and projectile.
