That sounds about right for conversion date. Sometime around then was when my unit (PWOR) converted.
Sterlings weren't made during WW2 like the Thompsons. I can't see us having bought more than we needed. We sold Leopard tank turrets off to Australia. I can see us selling off our Sterlings and FNs.
I mean, look at it this way: The Canadian Forces was somewhere around 83,000 members when I was in (1987-1988). It is now 57,000 or so. If you figure that includes Army, Navy, *and* Air Force (along with EW and Nurses), then you'll quickly figure that we don't need massive arms stockpiles. When we deployed to the Balkans and Afghanistan, we actually had to buy some body armour and night vision gear at the last minute. This suggests a very small logistics cache. Why? Because we've had not even enough money to keep manpower levels up, let alone deal with rust-out replacement. Our capital purchases, even replacing lost capabilities, has been minimal for about 20-30 years now.
Initial kit lists for Canucks in 2K+ should be C7, C8, C6, C9, M203, Browning HP, C3 (Parker Hale), maybe one of the new sniper rifles like the .50 (depends when they were phased in) and maybe MP5 and Diemaco's SFW (and the good old M2HB). MP5 and the SFW limited to special units like JTF2. We should get Carl Gustavs (both older and newer versions), M-72s (or whatever LAW is being used), and later Javelins. Mortars should be available.
Now, one can argue that over the time avialable and the random nature of resupply in the twilight war, you should be able to (maybe make a roll, maybe pay double cost or something) to acquire other weapons like M16A2, M4 variants (like M4 + M203 or M4 + Masterkey), M14, FN, Sterling, etc if you really wanted them.
That's my thought anyway. And for armour, Leopard 1A3-A5 (I forget where we stopped), Grizzly, Cougar, Iltis, then maybe Bison + Coyote. There are even odder EW vehicles, but I think I'm not supposed to really talk about them and they would not be of general interest (Mostly based off the 6x6 or 8x8 Chassis). We actually bought some ADATS too. Much as I like the Jeep + 106mm RR, I don't think you'll have much luck finding one nowadays.