A person who sells, lets on hire, gives or lends a firearm or ammunition to which section 1 of this Act applies to another person in the United Kingdom, not being a registered firearms dealer shall, unless the other person shows that he is by virtue of this Act entitled to purchase or acquire the firearm or ammunition without holding a firearm certificate, comply with any instructions contained in the certificate produced; and in the case of a firearm he shall, within forty-eight hours from the transaction, send by registered post or the recorded delivery service notice of the transaction to the chief officer of police by whom the certificate was issued.
It is an offence for a person to fail to comply with this section.