The Thompson/Center handguns are single shots...
Just sayin'
Yes, the Thompson/Center handguns are single shot, which is why this point has not been challenged previously.
What I am saying, is now that the LAR-15 Pistol has been deemed a "handgun" in Canada the ss109 round (which was previously not prohibited) now is Prohibited because it is now "capable of being dischaged from a commonly available semi-automatic handgun or revolver" and ss109 ammo is manufactured to be able to pierce body armour.
Hunting ammo is more then capable of pentrating body armour, however ss109 ammo is manufactured for that purpose.