That is going to be tough... their website says:
These products are regulated based on their firearm applications, export of which is restricted by the International Traffic in Arms Regulations(ITAR). WE SHIP TO U.S. ADDRESSES ONLY. ANY BARRELS TAKEN OUT OF THE COUNTRY MUST BE LEGALLY EXPORTED.
So you would have to find a dealer in the US with an exporting license to export it to a Canadian dealer with an import license...
Very expensive proposition in total...