Here we have the Brain Seeker’s original design. As you can see, there are some notable differences when compared to the final version. The stock looks more like a guitar and the brain, rather than directly in contact with the gun itself, is inside a jar curiously placed in front of the scope so “you can’t seek brains because there’s a goddamn brain in the way”.
This intentional flaw wasn’t easy to convey correctly, though, so the design evolved into something way more badass. Of course just as impractical, if not more so.
Looks like quite the brototype.