That worked. Your's has a ghost ring rear sight instead of a rifle rear sight like the 2019's have. So your's should be the non-2019 rail.
My 2019 version has a notch rear sight instead of that ring. Ahead of it is 4 holes in the receiver.
I'm not seeing holes ahead of your ghost ring rear sight. The product description on Canada ammo's non-2019 rail is "Receiver must be drilled and tapped for mount (different than ghost ring sight holes). Sounds like you might need to get the receiver drilled and tapper to use it?
If that's the case, it might be cheaper to just see if there's any other rails out there with holes that match up with the rear ghost ring sight holes when that part's removed.