What if the firearm was manufactured with a built in suppressor? Like say a new gun, built in Canada, with it made into the barrel. If it left the factory like that, then it would no longer be a device used to reduce sound, as that is the sound it makes from the factory no?
Nice try but that won't fly in Canada.
I have thought of this before, and by the letter of the law a factory made and non-disassemble-able integrally suppressed rifle (like the factory sealed can on the MP5SD) SHOULD be legal but there would be no way the RCMP would let that go. They would FIND a reason to prohibit it, somehow or some way.
The MP5SD is not no-disassembleable. The can may be removed from the barrel simply by unscrewing it. The barrel underneath is ported which is why the thing is deemed "integral" but there is nothing stopping the gun being fired with the can removed .... other than it would be REALLY loud.
Interestingly the MP5SD is actually legal in Canada. The people who wrote the laws didn;t have a clue what they were lumping into different classifications and the MP5SD is listed in the 12-5 prohib class. There is a general rule in law that the specific over-rules the general. The general rule is that silencers are prohib. But the MP5SD is specifically named as being a 12-5 prohib. Of course this is all academic as there are no 12-5 MP5SD's in civilian hands and the 12-X rules do not allow the creation of new guns in any class.