This is from the Mississauga firearms bylaw
““Firearm” means any barrelled weapon from which any shot, bullet, missile or other projectile can be discharged and that is capable of causing bodily injury or death to a person, and includes anything that can be adapted for the use as a firearm, and for the purpose of this by-law includes a slingshot, a spring gun, air gun, paint ball gun and air soft gun”
Which is virtually identical to the City of London bylaw but includes air soft and slingshots.
These cities use the municipal act to define what they consider to be a firearm within their city limits. They define ‘firearms’ as any ‘barrelled weapon’ not any ‘barrelled firearm’ and antiques would fall under this purview. Regardless that an antique is not classified as a ‘firearm’ for purposes of federal firearm legislation, at least within these two municipalities they would be considered a ‘firearm’ for purposes of their municipal code. Antique firearms would meet the municipal definitions, as an antique firearm is a ‘barrelled weapon’ from which ‘any…projectile can be discharged and that is capable of causing bodily injury’.