It's probably just not wanting to deal with the headache of international shipping. CBSA has it's only rules now it seems. The last I was made aware of was they were blocking importation of knives you could "flick open" one handed. I had a couple gerbers that broke and they refused to send replacements of those models because of said rule, had to pick something else.
If you could link me his page I would appreciate it.
i will PM you the link. also if you are looking for ak mags. best place is marstar.