Multimelta shot from a ring on his finger, no less.
The only redeeming feature is that it isn't as physically big as it appears in the preview, it's about 2/3 the height of a space marine. Apart from that it's a techno monkey and not much good can come from that. Unless you make a Moonwalkin MJ figure Inquisitor to go with it and call it Bubbles, but that's pushing it.