Hi,
Too bad it is not that simple for the Canadian company to send it to your FFL lol. Your FFL must submit a form 6 import application to the BATFE, the FFL then sends the import approval to Canadian dealer for them to apply for their export permit.
Once your FFL receives the firearm they have like 14 days or something like that to engrave the firearm with their FFL information just as they manufactured the firearm. Not many FFLs are going to take on that liability.
Sincerely,
Theis