[Sopater]

How likely do you think it is that this guy had it (them?) legally?

Not sure... he apparently has some money if he owns a couple of airplanes. However, if he had obtained them legally, there will be a pretty strong paper trail.

I think it's possible/likely that he simply put a bump-fire or slide-fire stock on the weapon that he was using and had something like a drum magazine or something. I still haven't heard a word on what kind of weapons were found in the hotel room, and which were actually used, which shouldn't be all that hard to determine and to publish.

[ifinnegan]

“if he had obtained them legally, there will be a pretty strong paper trail. “

That’s what I think as well.

He supposedly had ten guns, or so, in the room.