from elsewhere (this is post 88), but a bit more official

Quote Originally Posted by Team-CSSA
CSSA Communique re: Beowulf Magazines

Despite some recent social media surrounding Beowulf magazines, the CSSA is confirming that no ban on the sale of these magazine in Canada has been issued by the R.C.M.P. or the Minister of Public Safety at this time.

All six 50 Beowulf firearms FRT numbers remain listed as legal with a five round capacity and retailers should continue to sell this product at this time:

A recent letter from the R.C.M.P. addressed to ###### Armoury in response to a denial of their International Import Certificate for these magazines was shared via social media and has caused widespread speculation that the magazines themselves have been banned. This was a private letter to one company regarding one shipment, not a Special Bulletin.

The CSSA continues to work with the office of the Minister of Public Safety regarding this issue and will release further updates as needed.
EDIT
also from
here
http://www.gunownersofcanada.ca/show...343#post311343