Canada

Canada used to have a problem with gun owners selling their handguns on the black market. We are talking about Canadians with a valid PAL licence.

They purchased guns. Sold them. Profit. Easy as pie.

Winnipegger bought guns legally, sold them to gangs

https://www.cbc.ca/news/canada/manitoba/theodore-mantas-firearms-trafficking-1.4357623

A 22-year-old Airdrie man is accused of buying guns and selling them to criminals.

https://www.cbc.ca/news/canada/calgary/airdrie-alert-straw-purchasing-firearms-brady-fisher-1.5569889

Philip Edward Sarrasin, 26, is accused of running a straw purchasing scheme, where he legally bought multiple handguns which later turned up for sale on the criminal market.

https://www.cbc.ca/news/canada/calgary/gun-firearm-glock-straw-purchasing-trafficking-weapons-alert-1.4924037

Straw buyers were involved in two recent busts in northern Alberta that took illegal guns off the streets. The man, who was arrested on May 9, bought five handguns between November and December last year and resold them.

https://www.cbc.ca/news/canada/edmonton/alert-guns-investigations-weapons-drugs-straw-buyers-1.5145282

An Edmonton man who pleaded guilty received an eight-year prison sentence Thursday for his role in an illegal weapons trafficking scheme.

Shipowich had a restricted firearm licence when he purchased 40 restricted firearms between June and September 2016.

https://www.cbc.ca/news/canada/edmonton/edmonton-man-gets-8-years-in-prison-for-role-in-weapons-trafficking-scheme-1.4676590

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The good news? That problem is now over. It's not happening anymore. The price of handguns on the black market has increased, which is a good sign.

The bad news? Most guns are now only coming from the United States. And the United States doesn't want to address the problem.