Personally, this is not something I'd be taking advice on from a web forum.
There is detailed information available from Canadian Government and law enforcement web sites:
e.g.
http://www.rcmp-grc.gc.ca/cfp-pcaf/faq/index-eng.htm
http://www.rcmp-grc.gc.ca/cfp-pcaf/p.../hl-fs-eng.htm
Note that all non-prohibited handguns are "restricted" weapons, and require both licensing and registration.
If importing, and especially if by a non-citizen, I would consult a Canadian lawyer and a gunshop in Canada about the requrements and the process (there is bound to be a TON of paperwork required, at the very least).
Minimum pistol barrel length is 105mm, and .25 and .32 are prohibited calibers.