It is not an offence under section 22(4) of this Act for a person to have with him an air weapon or ammunition while he is under the supervision of a person of or over the age of twenty-one ; but where a person has with him an air weapon on any premises in circumstances where he would be prohibited from having it with him but for this subsection, it is an offence—
It is not an offence under section 22(4) or (5) of this Act for a person to have with him an air weapon or ammunition at a time when—