>>64410998
I found a result on Google with that image from 9 years ago, so it's definitely not AI. I think it's just a mix of weird and obscure parts.
I have seen AK74 style brakes for AR15s before (though that one looks different than any I remember), and I think that's outright an unfinished lower, as it lacks both the actual magwell and the magazine release button.
Optionally, it's a lower intended for some kind of single shot upper, and the regular AR15 upper is thrown onto there for the photo (it comes from some gungrabber article).
If I zoom in and squint, it looks like the side of the "magwell" reads
>FAB 10
>PATENT PENDING
I can't make out the rest. The American flag above the trigger is a more defined feature to look after.