Armorer,
IIRC, there were some added to the registry after 1968, citizens with DOD papers and something about FBI agents and Thompsons, perhaps LR has read this interesting news as well.
LR and I both agree ALL war trophy MGs/DEWATs should be allowed amnesty, damn the ONE month ' 68 BS, be it registered by veterans or veteran's relatives. To be FORCED (by govt) to surrender/destroy a piece of military history is not logical, a disgrace to those that have served.