<Li> airguns by spring action or pre-compressed air (PCP - Pre Charged Pneumatic) of up to 6mm calibre; </Li> <Li> airguns by spring action or pre-compressed air (PCP - Pre Charged Pneumatic) of calibre exceeding 6mm; or pre-compressed gases that is not breathable air, such as CO2 and others, in any calibre . </Li> <P> Airguns in the first group may be purchased by anyone over 18 . Airguns in the second group can only be purchased by people registered in the army, transportation depends on authorization, and usage is allowed only in places approved by the army . Airguns of any kind may not be carried openly . There is no muzzle energy limit for any type or calibre . </P> <P> Scopes or any equipment with magnification needs to be registered by the army in the shooter's registry and accompany a traffic authorization, and are allowed to civilians only if under 6 times magnification and with the objective lens smaller than 36 millimeters . Scopes with magnification equal or above 6 times and / or over 35 milimeters, or equipment that mark the target (like laser sights), are restricted to civilians and allowed only for use by the army . The permitted equipment has to be registered in the civilian's document, this process is called "Apostilamento". The document for a shooter's registry is called "Certificado de Registro de Atirador". </P>

Is it illegal to shoot a gun in the air