Originally Posted by
OneNationUnderThor
Like trambit posted, it is only illegal if it actually muffles the sound. Which bizarrely makes it the only piece of safety equipment in Canada that is prohibited.
But, as has already been mentioned, walking around with anything that looks too tactical or Hollywood will get you unwanted attention. The general population has no clue about how firearms actually work or what is and is not legal. The police are hardly any better.
That said, Fabsports sells Spike's Tactical fake cans. They are a sponsor on CGN so look for their banner up top.