It looks like it's supposed to be some kind of MGS but, with the engine taking up half the rear space of the turret, there's no room for an auto-loader or magazine, Also, the tool rack, & whatever that is behind it, cover what should be an engine acces hatch. Plus, what's with the flared guards? As the previous images show, not part of the base design & not needed, unless you want it to look cool.
So, I'm wondering if it's a movie prop, possibly from SE Asia, where V-100s/LAV-150s are/were more common - not that I can find anything that suggests this might be the case.