To get Metal Gear Rising: Revengeance’s Cyborg Ninja DLC in the US, you have to pre-order from GameStop. That isn’t the case in Europe. Konami will be including the skin in each copy of MGR: Revengeance in the continent.
Konami said: “To those wondering if the MG Rising Cyborg Ninja US pre-order skin is coming to the UK, don’t worry. It’ll be included in all EU versions.”