Your problem seems to actually be about the "what" it is that is attempting to be controlled/banned, the "how" of what is being proposed for controlling such, and more importantly also the "why in the first place".
I think you should read up on the American legislation or proposed legislation about all this, to understand the "what" and the "how" parts. I'm not really fully up to speed on all of what has been previously successfully or unsuccessfully attempted in the US. I assume lots of the context surrounding all of that might also get into the "why", but I agree that some the "why" is probably quite subjective or emotional for some people.
I assume it's clear to you that my statement(s) aren't the root of the issues or concerns you might have, and specifically the post of mine that you quote responded to doesn't actually have any problems in it or in relation to your attempted if/then statement, since my post(s) didn't include a statement(s) saying that assault rifles/weapons didn't exist.
I don't think I have any opinion about your "...why is this the real boogie man", because I'm pretty sure I don't really understand what you mean by that.