The chief officer of police for the area in which the holder of a firearm certificate resides may at any time by notice in writing vary the conditions subject to which the certificate is held, except such of them as may be prescribed, and may by the notice require the holder to deliver up the certificate to him within twenty-one days from the date of the notice for the purpose of amending the conditions specified therein.
A firearm certificate may also, on the application of the holder, be varied from time to time by the chief officer of police for the area in which the holder for the time being resides; and a person aggrieved by the refusal of a chief officer of police to vary a firearm certificate may in accordance with section 44 of this Act appeal against the refusal.
It is an offence for a person knowingly or recklessly to make a statement false in any material particular for the purpose of procuring, whether for himself or another person, the variation of a firearm certificate.