On the paper my shotgun registration certificate came on it says.
Firearm owners must report to the registrar of firearms, within 30 days:
- Any modification to the firearm that affects its classifications
(non Restricted, Restricted, Prohibited);
- Any modification that results in the firearm ceasing to be a firearm;
- Any change to a frame of receiver that allows it to discharge ammunition;
- Any modification to the type, auction, calibre or gauge of the firearm; and
- Any modification to an altered automatic firearm.