(a) declare specified firearms to be restricted firearms for the purposes of this Act by reference to one or more than one of the following criteria:
(i) category;
(ii) calibre;
(iii) working mechanism;
(iv) muzzle energy;
(v) description;
and
(b) declare specified ammunition to be restricted ammunition for the purposes of this Act by reference to one or more than one of the following criteria:
(i) category;
(ii) calibre;
(iii) weight;
(iv) kinetic energy;
(v) ballistic co-efficient;
(vi) design;
(vii) composition;
(viii) description.