Section 21
Prohibition on persons convicted of crime purchasing or possessing firearms

(1)  Subject to the provisions of this section-

     (a)  a person who has been sentenced, by a court in any part of the British Islands, to custody for a term of 3 years or more, shall not at any time have a firearm or ammunition in his possession; and

     (b)  a person who has been sentenced, by a court in any part of the British Islands, to custody for a term of 3 months or more but less than 3 years, shall not at any time before the expiration of the period of five years from the date of his release have a firearm or ammunition in his possession.

(1A) For the purposes of subsection (1), 'the date of his release', in the case of a person sentenced to imprisonment with an order under paragraph 36(1) of Schedule 1 to the Criminal Law Act 1981, is the date on which he completes service of so much of the sentence as was by that order required to be served in prison.

(2)  Subject to the provisions of this section, a person who-

     (a)  is the holder of a licence issued under section 53 of the Children and Young Persons Act, 1933, or section 57 of the Children and Young Persons (Scotland) Act, 1937 (being Acts of the Imperial Parliament); or

     (b)  is subject to a recognizance to keep the peace or to be of good behaviour, a condition of which is that he shall not possess, use or carry a firearm or is subject to a probation order containing a requirement that he shall not possess, use, or carry a firearm;

shall not, at any time during which he holds the licence or is so subject, have a firearm or ammunition in his possession.

(3)  A person prohibited under the foregoing provisions of this section from having in his possession a firearm or ammunition may apply for a removal of the prohibition in accordance with so much of the provisions of the First Schedule to this Act as relates to applications, to the High Bailiff, and if the application is granted the said provisions of this section shall not apply to that person.

(4)  No person shall sell or transfer a firearm or ammunition to, or repair, test or prove a firearm or ammunition for, any person whom he knows, or has reasonable ground for believing, to be prohibited by this section from having a firearm or ammunition in his possession.

(5)  If any person contravenes any provision of this section, he shall for each offence be liable on summary conviction to imprisonment for a term not exceeding six months or to a fine not exceeding £1,000 or to both; and on conviction on information to imprisonment for a term not exceeding three years or to a fine or to both.