The Supreme Court of Canada says it will rule Friday on Quebec's effort to preserve part of the defunct long-gun registry.
The Harper government's law to end the registry ordered the destruction of all records of long guns, but Quebec objected, saying it wanted to set up its own registry, using the federal data as a starting point.
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The province went to court to preserve the records on Quebec-owned rifles and shotguns.
A Quebec Superior Court ruling in September 2012 sided with the province, but the Court of Appeal reversed that decision.
In November 2013, the Supreme Court agreed to hear Quebec's appeal and ordered that the records be preserved pending its decision.
The records from the rest of the country have already been destroyed.