May be a KO. I can't find a Takara stamp on him anywhere. Does anyone know where it would be located or any other way to tell for sure he's a knock off?
I have the Deathgarrygun repaint, from the Brave series Shin mentioned. It has a stamp on the rear "ankle" area. Not sure about the original Sky Garry as I've only had a KO from the 90s and the Brave repaint.
Just based upon some quick research this ones paint looks like it matches one version of the KO. The official looks to have a yellow "star" on the chest and more of a silvery painted face. This ones star is orange and the face is grey. It's well built though and if it just had a Takara stamp I'd believe it was official. The little spring mechanism that grabs the space cargo ships even works.