Unfortunately we have been through this before and the Order In Council (OIC) process is well established. It is not really the same but I think of it as similar to an Executive Order. In this case the OIC changed the classification of a number of firearms and other items (including AR-15 _upper_ receivers) to prohibited so they can no longer be transported or used, but it didn't actually change any legislation.
Various people and organizations are trying to figure out how to attack this, at least in part due to the wording which *seems* to prohibit certain shotguns with interchangeable chokes because the barrel diameter with the choke not installed is greater than 20mm. Hopefully that part will get corrected but in the meantime it may help to wake up the hunters and clay shooters.
We have nothing like the 2A here so our best hope is regime change, and the first step on that very long road is to identify the leader of the (prospective) new regime.