Sorry, but you're on the wrong track, in my opinion.
The truth is that they JUST DON'T CARE!
If it fires bullets - one at a time or a thousand in sequence - it doesn't matter; they don't like them!
Weapons, and the ability to defend oneself with those weapons, are the antithesis of socialistic doctrine.
In Karl Marx's perfect world the masses are subjugated to the whims of party officials without the means of objecting.
This is not now, nor has it ever been, a confusion about semis and fully automatic weapons.
This is about confiscation of ALL guns!
Spoken like a true Texan! Atta boy!!!!!!!!!!!!!!