The suspect in the mass shooting that killed 10 people at a Buffalo grocery store on Saturday used a rifle that was widely described as an "assault weapon." With certain exceptions that don't apply here, that category of firearms is illegal in New York. Yet The New York Times reports that the shooter legally bought the rifle from a gun dealer in Endicott, New York. How is that possible?
It turns out that the rifle, a Bushmaster XM-15 ES, was not an "assault weapon" at the time of the purchase, but it became an "assault weapon" after the shooter tinkered with it. The details of that transformation illustrate how arbitrary and ineffectual bans like New York's are.
