Being grandfathered is not a good thing.
Think about it.
The AR-15 is already restricted to range use only, what point is there in making it prohibited and then letting you keep using it at the range?
Even if they grant you an ATT it will only be for a short time till we settle down then they'll just stop issuing ATT's and you've got a safe queen.
Grandfathering is just an easy way for them to ban them without paying you for your property. You get to look at it and dream while they spend zero dollars on paying you and don't have to spend countless manhours confiscating and destroying.
There is no silver lining in this legislation. If it goes through the days of firing an AR-15 legally in Canada are coming to an end.
I wouldn't spend another dime on building AR's until after the next election.
Keep your lowers and see what happens before sinking more money into what is going to become a paperweight.