Appeal a firearms decision You must have JavaScript enabled to use this form. Use this form to appeal to the Department of Justice against a decision of the Chief Constable in relation to firearms and/or ammunition. Your appeal must be made within one month of receiving notification of the Chief Constable’s decision. Notification details PSNI reference number Enter the reference number shown on the Chief Constable's letter of notification. Date notification received Enter the date when you received the Chief Constable's letter of notification.