It's not just Marui. If it isn't clear, it's classified as a replica (with a handful of model/size exemptions) and therefore the CBSA says "prohibited" and denies importation. All manufacturers are lumped together in this.
What the remaining retailer decides to bring in is his choice. You can always ask about a special order.
Age verifier Northern Alberta
Democracy is two wolves and a sheep discussing what's for dinner.
Freedom is the wolves limping away while the sheep reloads.
Never confuse freedom with democracy.