Well lets start with the Gran-daddy of all tacticals, the Thompson. Those got burned in the first wave.
Almost everything and anything made by Armi Jaeger under the AP banner got nixed ( with the exception of the AP-74 m-16 clone), iirc there was the AK, PPSH, and Galil copies that all got banned.
Also the American 180's and anything that remotely resembled them.
The MP5 copies made by GSG got banned before they showed up based on the "looks like" not "works like" RCMP interpretation.
I'd be very surprised to see a Kel-Tec Su 22 in any canadian store.
That's about all the one's i can remember atm. To long a list it seems.