Depends on the type of gun and who made it.
Oxidation of the steel of a gun barrel.
Take it to a gunsmith- who will also know how long the barrel must be to be legal.
Flower in the Gun Barrel was created in 2008.
The gun barrel is the metal part that the bullet comes out of.
You take it to a gunsmith who has the special tools needed to remove a barrel without damaging the gun.
A barrel is part of a gun
you can but it is hard you have to take apart the gun and pull the stock up and close the gun
Barrel of a Gun - Guster song - was created in 1998.
you'll have to take the gun apart to remove it.
Use a cloth swab threaded through the tip of a gun cleaning rod and swipe it through the barrel. Then take a clean one and do it again until all the oil is removed.
You will have to replace the barrel
The barrel is usually above the centerline of the gun. When fired, recoil pushes straight back from the line of the barrel, but that is offset above the centerline, and causes the gun to pivot.