Yes.. good advice above. Whatever you do, do not try and import the unpinned magazine or even the unpinned magazine body (if that even makes sense in the context of how these mags are pinned... just don't go anywhere near this stuff).
I'm a lawyer in Vancouver who has been representing gun owners in a variety of cases in addition to my "day job" (as a criminal lawyer). Too many good people have completely lost their firearms privileges, their firearms, a lot of money and sometimes even more than that by trying to import firearms parts and components from the U.S. - and I am just talking about cases that I worked on personally... mostly trying to clean up the mess and mitigate the damage after the person has already inflicted the fatal blow (on their own gun privileges).
If there is any doubt in your mind about the legality or "gray area" status of what you are doing, do not do it: full stop. CBSA and IBET will treat taking you down as a sport... and then "high five" each other and laugh about it over drinks after turning your world upside down.
If the R. v. Cancade case, which we argued in the B.C. Court of Appeal in January of 2011, comes back positive - people may be able to safely start importing the magazine bodies again. But that is an "if" scenario.
The best advice is to buy all your firearms and firearms related products in Canada from a licenced retailer. If that is not going to work for you... be careful.
With regard to a Hakim magazine... so you're talking about a 8mm rifle with detachable 10-round magazine... I think the above advice is correct: you have to find a gunsmith in the United States who will take delivery of the magazine that you buy; modify it in compliance with the regulations; and then ship it to Canada (I personally recommend having it sent to a firearms business licence holder in Canada if possible, as they tend to get cut more breaks if there are any problems).
You guys might think I am exaggerating, but I'll tell you... not so long ago I witnessed a husband and wife lose absolutely everything: firearms, licences, busines, home, life savings, reputations... over an issue that started out with one of these import scenarios.
Get a Canadian dealer to find one for you. That is my advice.