Could someone explain this one to me? (the bolded part)
I know ballistic testing of a recovered bullet might be able to identify the make and model of the gun that fired it, but tracing it to the retail store that sold it? I thought in order to do that you would have to do a ballistic test individually on every gun available for sale and put it in a database, not just bullets recovered from crime scenes.The centerpiece of the center area eTrace and the National Integrated Ballistic Information Network.
NIBIN is the Bureau of Alcohol, Tobacco, Firearms and Explosive’s network of millions of ballistic images captured from crime scenes across the nation.
ETrace is ATF’s program that can trace guns used in crimes to the retail store they were bought at.
As a result, multiple shootings can be tied together, whether they happened in the same neighborhood or hundreds of miles apart, and shooters can be identified more quickly, the release states.