Technically it is considered a firearm according to Belize law I have been advised, although it is openly for sale in some places.
This is from the Belize Firearms Act
"16.-(1) No person may without the authority of the Minister import, manufacture,
sell, purchase, carry or have in his possession any weapon, of
whatever description, designed for the discharge of any noxious liquid, gas
or other thing, or any ammunition containing or designed or adapted to
contain any such noxious thing.
(2) Every person who contravenes this section shall be guilty of an
offence."