(1) A person is guilty of aggravated burglary if he commits any burglary and at the time has with him any firearm or imitation firearm, any weapon of offence, or any explosive; and for this purpose—
(a) “firearm” includes an airgun or air pistol, and “imitation firearm” means anything which has the appearance of being a firearm, whether capable of being discharged or not; and
(b) “weapon of offence” means any article made or adapted for use for causing injury to or incapacitating a person, or intended by the person having it with him for such use; and
(c) “explosive” means any article manufactured for the purpose of producing a practical effect by explosion, or intended by the person having it with him for that purpose.
(2) A person guilty of aggravated burglary shall on conviction on indictment be liable to imprisonment for life.