Full automatic weapons are not legal you say, ?

Immediately followed by you saying they are.

And guess what, they are legal and there are around 193,000 pre-cutoff machine guns in legal ownership nationwide.

That's not indicative of 'very few' collectors.

You don't have to be a collector at all, most citizens qualify if they simply fill out the forms and pay the money.

http://www.nfatca.org/pubs/MG_Count_FOIA_2016.pdf

Death to the NRA.  It's a terrorist organization.