Proof by counter example: The case against gun registries

Low-tech weapon probably limited Zehaf-Bibeau’s damage

Fact: Ottawa shooter Zehaf-Bibeau was forbidden to possess a firearm;  he acquired one in any case.  It was a 1890's pump action rifle: Winchester 30-30.  No one has come forward to admit losing this hunting rifle.

So this is what is clear: a gun registry would not stop a criminal looking for a weapon.  A person that sells crack cocaine can trade that for a weapon from someone that would rather have the drugs.  There would be no reporting of the "loss" - so having this firearm registered would have solved exactly nothing.