[Old Teufel Hunden]

"aren’t there more then enough FEDERAL LAWS covering the sale ownership and use of machine guns?"

Yes, the Federal law makes machine guns practically extinct in the civilian market.

[Dan Nunn]

Yes, the Federal law makes machine guns practically extinct in the civilian market.

Correct. No new fully automatic weapon manufactured after 1986 may be transferred into civilian ownership. Thus, only pre-1986 weapons are (legally) in the hands of civilians.