Quote Originally Posted by OriginalPost
Since the 50 Beowulf calibre magazines are adapted from the original 5.56x45 mm NATO design and the ability of the magazine to perform as originally designed has not been compromised by the adaptation, such magazines are prohibited if they contain more than five 5.56x45 mm NATO cartridges.
(a) that is capable of containing more than five cartridges of the type for which the magazine was originally designed and that is designed or manufactured for use in
(i) a semi-automatic handgun that is not commonly available in Canada,
(ii) a semi-automatic firearm other than a semi-automatic handgun,
...
-- Regulations Prescribing Certain Firearms and Other Weapons, Components and Parts of Weapons, Accessories, Cartridge Magazines, Ammunition and Projectiles as Prohibited, Restricted or Non-Restricted, SOR/98-462, http://laws-lois.justice.gc.ca/eng/r.../fulltext.html