Offences relating to Lost, Destroyed or Defaced Weapons, etc.
Marginal note:Losing or finding
105. (1) Every person commits an offence who
(a) having lost a firearm, a prohibited weapon, a restricted weapon, a prohibited device, any prohibited ammunition, an authorization, a licence or a registration certificate, or having had it stolen from the person’s possession, does not with reasonable despatch report the loss to a peace officer, to a firearms officer or a chief firearms officer; or
Section 105 of the criminal code seems to suggest registry or no, you still need to report it