automatic rifle
Portable assault rifle that fires cartridges; in automatic weapons such as submachine guns and light machine guns, the cartridges are fed by a magazine or a belt.
flash hider 
Muzzle attachment designed to cool the gases and reduce muzzle flash.
handguard 
Piece that protects the shooter’s hand from the heat of the barrel.
magazine 
Part containing the cartridges, which are automatically fed into the gun barrel.
safety 
Catch that blocks the trigger to prevent the weapon from firing by accident.
trigger 
Device that is pressed to fire the weapon.
butt 
Back part of the weapon that is held against the shoulder.
pistol grip 
Part for holding and aiming the weapon; its shape is similar to that of a pistol butt.
charging handle 
Device used to cock the weapon.
bolt assist mechanism 
Mechanism for choosing between automatic fire (center position) or single shot (down position).
rear sight 
Articulated graduated aiming device attached to the back of the barrel; the rear sight is lined up with the front sight when aiming.
barrel 
Tubular part that guides the trajectory of the projectile.
front sight housing 
Device that protects the front sight from impact.
barrel jacket 
Perforated or water-filled metal tube around the barrel; during firing, the tube fills with water to cool down the barrel.
ejection port 
Hole from which the empty shell casings are ejected.
receiver 
Metal casing around the weapon’s firing mechanism.