And in California (where this happened), all private sales must go through the DROS system ... and end up in the state DOJ database, searchable by serial numbe

And in California (where this happened), all private sales must go through the DROS system ... and end up in the state DOJ database, searchable by serial number or by owner. During a traffic stop, when an officer calls in your ID, they can instantly know whether you legally own hand it"assault weapons", and how many.