Tactical Life reports …
… Brought back as a war trophy by a U.S. Army soldier who had served in Iraq, the rifle was seized by the ICE (Immigration and Customs Enforcement) in cooperation with the U.S. Army at the behest of the Iraqi government.”
I think illegally importing a Class III rifle would result in jail time. I hope they were lenient on the soldier.
[ Many thanks to Sven for emailing me the link. ]