Name that gun
It looks sort of like a bullpup style, has a translucent poly U shaped mag that snaps on top 30 maybe 50 round.
Short thumb hole stock, whole thing maybe 20 inches.
Local shop has one, was too busy to look at today, was going to do some research and try again tomorrow.
No idea what it was called, would probably recognize it if I saw a pic...
Been searching through "top magazine" pics and have not come across it.