Breacher,
The Chinese (Norinco) M14s are rough around the edges, but generally shoot quite well for a battle rifle. What I will say is that you may have to have them partially rebuilt for the best reliability. I had one with a crooked guide-rod disassemble itself on me in a shooting match once, luckily nobody was injured but me (and my pride). Provided the Barrel is at least 18.6" long, the rifle is non-restricted, and may be used for hunting or other sporting purposes outside of a designated range facility (20" bbl AR15s, by the same standard, are restricted by name in the Criminal Code).
Technically, over-the-counter gun sales are still supposed to be done in an official capacity, but it appears that in reality, this is not the case with private individuals.
Semi-automatic center-fire rifle magazines are limited to a 5-round capacity (with the exception of the 8-round en-bloc clip). This is without exception, though interestingly enough, it is perfectly legal to stick a 10-round pistol magazine into a rifle that uses a similar magazine. This has allowed the de-facto magazine limit to approach as high as 15 rounds (the 10-round .50 Beowulf pistol mags can hold 15 rounds of 5.56mm). It would be awesome to see somebody make an M1A pistol, so that Canadians could have legitimate 10-round M1A mags.