Okay, I understand the political value of annoucing gun control in Canada, but they're announcing "new measures" that already exist.
globalnews.ca
"Effective May 18, individuals and businesses transferring or selling a non-restricted firearm will need to confirm the recipient’s identity and check the validity of their firearms licence with the registrar beforehand, providing the recipient’s licence number and any other information requested. "
But we've already had this requirement for years.
Do people in Canada think you can just walk into a store and buy a gun?
To legally sell a gun you must ensure the person you are giving it to has a valid license, it's been this way for years.
I know people in the US think you can. (Hint you can't, you need to pass a background check in both Canada AND the US to buy a gun)

Canada introduces new firearm regulations to ensure gun buyers have valid licence - National | Globalnews.ca
In addition, the legislation expands background checks that would determine eligibility for a firearms licence to a person's entire life, not just the last five years.
But we've already had this requirement for years.
- Non-restricted
You do not need to register non-restricted firearms. That means you can transfer a non-restricted firearm without contacting the Canadian Firearms Program (CFP). However, the transferor (seller, giver) must make sure that the transferee (buyer, recipient) has a valid PAL. Call the CFP at 1-800-731-4000 to confirm the validity of the transferee's licence before you transfer the firearm.
Do people in Canada think you can just walk into a store and buy a gun?
To legally sell a gun you must ensure the person you are giving it to has a valid license, it's been this way for years.
I know people in the US think you can. (Hint you can't, you need to pass a background check in both Canada AND the US to buy a gun)