Unless the regulations have changed CanadianBren DEWATs have to have the following:
1) bolt face drilled out to not hold a firing pin.
2) metal rod welded into the barrel with the weld being of a stronger metal than the barrel so you'd destroy the barrel if you tried to remove it.
3) barrel welded to the receiver.
4) gas tube cut.
The magazine laws also required the Bren magazine to be irreversibly altered to hold no more than 5 rounds. I coud rack the receiver back on my Inglis Mk I DEWAT which I had until 2001 when I moved to Texas.. I ended up selling it as the BATF didn't like the uncut receiver on it. Did the Canadian Feds go back and make everyone who owned a Bren DEWAT weld the action shut sometime after I left?