Yes it can be done thru a liscenced importer BUT you won't get some of the parts ie; bolt, trigger, barrel..... Unless you have friends in high places hehehehe
Try Armtac, he can help you with the basic kit that can be imported. His price, though high for some, is a good price considering the hoop jumping and costs to even get those kits into canada legally.
Considering, a parted out good condition FULL usgi parts kit in canada already goes for in excess of 1500 to 1800 sold seperately.
Last kit I listed sold in an hour for 1750.00 shipped and there was a list of guys that were after it.