Lack of Supreme Court actions means most owners are now felons despite pending litigation
Printed firearms are legal to own for personal use
ATF traced more than 400,000 firearms in 2017
One agent left his gun in a briefcase on the DC Metro, one stolen gun was used in a crime
U.S. attorney says gun crime prosecutions a 'top priority'
'Anyone who may have information about these individuals or firearms should come forward as soon as possible'
Retrieval requests came over period of a year, revealed in annual report released in May
Military court-martial likely should have disqualified him from gun ownership