Are flamethrowers legal to own?

Yes. In the US flamethrowers are not regulated by the federal government. Flamethrowers are not considered a firearm by the ATF. You do not need an NFA tax stamp or FFL dealer to transfer ownership. However, it’s the purchaser’s responsibility to ascertain that ownership and or use does not violate any state or local laws or regulations. Some states (CA) require the owner to purchase a a license after you purchase a flamethrower. It is the purchasers sole responsibility to ascertain  what the city or state ordinances are.

Maryland 

Maryland requires an FFL license to purchase a flamethrower. It's a pain for us so we don't ship to Maryland address. If you have a Maryland address and a Valid FFL license please contact us for verification.