Watch out, those people with airsoft guns might be making automatic rifles.

"With minimal work, it could be converted to a machine gun."

Ok, so...
First, the plastic (or possibly pot metal) frame would have to be replaced.  Then the barrel would have to be replaced.  Then the entire firing mechanism would have to be removed and replaced.  Oh, let's not forget that the current magazine is designed for 6mm BBs, so we need a new one of those.  And, lastly, the plastic housing would need to be replaced, lest it melt from the heat or fracture under stress.   You could probably keep the original trigger.

Minimal work.  Riiiiiiiiiiiiiiight.

Government Agencies have come up with some pretty preposterous statements but this is one of those that takes the proverbial "cake."  WTF???  Whoever their arms specialist is that came up with this statement  "With minimal work, it could be converted to a machine gun." needs to be replaced.  Anyone of us could hold this position if that's the case.  I would like to be present when this person is asked to test fire the first "converted" gun.  And not from a rig or a gun vise, i want "HIM" to personally do the test firing.  I smell some serious BS!