From the RCMP website, :
Magazines designed or manufactured for both centrefire calibre rifles and handguns
Magazines designed to contain centrefire cartridges and designed or manufactured for use in a semiautomatic rifle are limited to five cartridges. However, magazines designed to contain centrefire cartridges and designed or manufactured for use in a semiautomatic handgun are limited to 10 cartridges. Magazines designed or manufactured for use in both semiautomatic rifles and semiautomatic handguns are subject to the limit of five cartridges.
Example:
Hi-Point rifle and handgun chambered for 9mm Luger caliber:
magazine capacities over five rounds are prohibited."