The Bow Barrel is an unobtainable barrel attachment in Unturned. It reduces gun noise by 60%, and it is only found in the Bow internally.
The Bow barrel was never meant to be an item that could be in the players inventory, and if spawned, will break the slots it spawns in. This can only be fixed by dying. Its description file is completely empty, and it has no model for it.
This means that it is more of a modifier than an item.
The Bow Barrel is called #NAME when obtained through cheating.