Ottawa dismantled the registry and its data on 5.6 million rifles and shotguns last year, despite pleas from Quebec.
This is the province’s last chance to preserve the records for an estimated 1.6 million firearms, which it hopes to use to create its own version of the federal registry.
In June, the Quebec Court of Appeal said it would not force the federal government to preserve the information.
At the time, Quebec Employment and Social Solidarity Minister AgnèsMaltais said she was disappointed with the ruling, saying the federal government had a “lack of comprehension of the Quebec situation.”
If the Supreme Court refuses to hear today's appeal, the Quebec Court of Appeal's decision will stand, and the data will be destroyed.