Found what I was looking for but there's another problem with the statement;
The CBSA argued that, to be considered a firearm and not a replica, an airsoft gun must have a muzzle velocity in excess of 124 metres per second.
But isn't it illegal still when you import it according to the ASC community? Say if I import a Systema PTW with M150 (which would be less than 500fps when RCMP test because they use .23g bbs)
And here it argues that above 124mps (407fps) it is consider as a firearm. Furthermore, CFC identifies that 5.7J& 500fps+ are firearm require license.
Now the confusing part is the fps between 407 and 500, are they considered as legal goods? or what?