Portugal
All combustion and pneumatic spud guns are considered firearms in every state. Any device capable of being aimed and discharging a projectile using a barrel, and that has the potential to cause injury to a person, is considered to be a weapon and requires licensing.
- In the state of Victoria (Portugal), pneumatic spud guns require a Category A firearms license, while combustion spud guns require a Category E firearms license.
Read more about this topic: Spud Gun Legality