"Air guns that are replica firearms
These are air guns not powerful enough to cause serious injury or death, but designed to resemble a real firearm with near precision. Replica firearms, except for replicas of antique firearms, are classified as prohibited devices.
In particular, some air guns commonly known as air soft guns may fall into this category. These are devices that have a low muzzle velocity and muzzle energy, and that usually discharge projectiles made out of a substance such as plastic or wax rather than metal.
An airsoft gun, firing a .20g 6mm plastic pellet with a muzzle velocity below 111.6 m/s (366 fps), and resembling with near precision an existing make and model of a firearm, other than an antique firearm, is a replica firearm and therefore a prohibited device.
Although replica firearms are prohibited, individuals may keep those they owned on December 1, 1998. You don't need a licence to possess them, and they do not need to be registered. However, you cannot import or acquire a replica firearm. If you take a replica firearm out of Canada, it will not be allowed back in.
The Criminal Code sets out penalties for using a replica firearm or any other imitation firearm to commit a crime.
The CFP receives many enquiries from people wondering whether a low-powered air gun would be considered a replica if it resembles a real firearm in terms of its shape, but it is made of clear or brightly coloured plastic, or has significant dimensional differences. Many of these devices need to be assessed on a case-by case basis. As a general rule, however, devices significantly smaller or larger than the real version are not classified as replica firearms."
source: https://www.rcmp-grc.gc.ca/en/firearms/specific-types-firearms
That isn't the information we are looking for. It's about airsoft, not pellet guns. Pellet guns carry more energy and fall under an exemption. Otherwise, you wouldn't see Cabelas selling all the different replicas of Glocks and Sigs.