The Ferret as well as most other uppers to be fitted onto an AR lower are made in the USA so can not be exported to Canada ( Thanks Mr Bush)
The few that are already in country are deemed restricted once you attach the lower, which is actually the restricted part.
We are building a lower assmbly that we hope will solve this problem, but the upper needs modification so it will never fit onto an AR lower again.
Now we wait for the feds to decide whether we have been able to idiotproof the lower we made enough to meet the non restricted criteria.