Article 11 Variation of firearm certificate
(1)
The Chief Constable may vary a firearm certificate on the application of the holder and payment of the appropriate fee (if any).
(2)
If an application is made under paragraph (1) for a firearm or ammunition to be added to a firearm certificate, paragraphs (1) and (2) of Article 5 shall apply to the variation of the certificate as they apply to the grant of a certificate.
(3)
If a person—
(a)
sells a shotgun (“the first shotgun”) to the holder of a firearms dealer’s certificate (“the dealer”); and
(b)
as part of the same transaction purchases a shotgun (“the second shotgun”) from him,
the dealer may vary that person’s firearm certificate by substituting the second shotgun for the first shotgun.