Get a grip and actually try learning something about the firearm shown; not only is it not in production, but it is not a submachine gun. Just because it is "black and scary looking" does not make a firearm a machine gun and mean that everyone has to panic and start yelling "oh noes".

Hey, it's like real-life Doom 3, you can't have the weapon and flashlight at the same time. I wonder if someone will come out with a duct-tape hack...?

I'm just wondering what neighborhood he's walking his dog in that he think he'd need a flashlight/Glock.

I thought it was cool. I have no use for it. But it's still pretty cool.

It is a little tricky to classify this weapon -- it could be called a short-barreled submachine gun or a full-auto pistol with a folding stock. The full-auto feature is optional, of course, and would not be appropriate for a civilian version in most countries. If I recall correctly, this manufacturer is located in Israel, which may explain the incentive for more firepower.
Most states in the USA allow licenses for concealed carry of (semi-automatic) handguns. It is not clear to me that it would be easier to open this thing up than to draw a comparable Glock from a rear hip holster. In most states a concealed handgun license requires the weapon to be concealed -- I wonder how that would apply to something that looks nothing like a gun?