Ottawa also said it is working with the government of Ukraine to see how the guns can be donated to support the fight against Russia's invasion of Ukraine.
The move follows the May 2020 ban of 1500 makes and models of firearms, a number that grew to more than 2000 by November of this year as new variants were identified.
Military-style assault rifles don't belong in your community. So, we've banned them. — Justin Trudeau (@JustinTrudeau) pic.twitter.com/sa1gPPOHtfDecember 5, 2024
The latest restriction, announced Thursday by Public Safety Minister Dominic LeBlanc, follows concern from gun-control advocates that many assault-style firearms were not included in the 2020 ban.
"This means these firearms can no longer be used," LeBlanc said.
Defence Minister Bill Blair said Canada approached Ukrainian authorities, who expressed interest in some of the guns.
"Every bit of assistance we can offer to the Ukrainians is one step toward their victory," Blair said.
The federal government says it is working with provinces, territories and police on a planned buyback of prohibited weapons from individual owners.
Mass shootings are relatively rare in Canada, but the newly announced measures come on the eve of the 35th anniversary of the École Polytechnique in Montreal shooting, where a gunman killed 14 women before taking his own life. The Ruger Mini-14 used by the gunman, Marc Lepine, was among the weapons included in the 2020 ban.
Canada has had far fewer mass shootings than the United States, in part because of a lack of easy access to guns, though the US population also is far larger than Canada's. Officials have acknowledged guns smuggled into Canada illegally are often used by criminals.
Opposition Conservative leader Pierre Poilievre called the announcement a "stunt" by Canadian Prime Minister Justin Trudeau's government that attacks "licenced & law-abiding hunters and sport shooters".
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