The fairing and seat are almost certainly HK copies. The stickers are all wrong, the seat unit is a one piece item (the rear light surround is welded to the side panels) and the wing mirrors are the HK replicas.

It's missing magteks as Charles identified, the front forks look SE (no blue adjusters) and rearsets are Coerce.

The pipes might be off an MC21 as the end cans are turned slightly outwards (which happens when MC28 cans meet MC21 pipes) and it's missing the passenger foot pegs.

Does look like a genuine petrol tank though.