The fate of Quebec’s long gun registry is at stake this week in a Montreal courtroom, as the province’s lawyers argue that they should be able to use the Quebec data from the doomed federal long gun registry as the basis for a provincial one.

We recently obtained a redacted copy of the national firearms registry under ATI, made before the long gun data started to be deleted. Our first use of it is an interactive explainer looking at Quebec’s 1.6 million long guns: