As Canadians, and presumably as Canadian firearms owners, we all need to be conversant about the applicable laws.
As a favour, here is one relevant section on this item.
You will want to take a look at the Criminal Code, the Firearm's Act and anything else that has a direct bearing on the things you do.
From SOR/98-462 (You know this one as the order in council that banned a bunch of guns because they look scary)
Former Prohibited Weapons Order, No. 3
6. Any device that is designed to be capable of injuring, immobilizing or incapacitating a person or an animal by discharging an electrical charge produced by means of the amplification or accumulation of the electrical current generated by a battery, where the device is designed or altered so that the electrical charge may be discharged when the device is of a length of less than 480 mm, and any similar device