Return of Zombie Ops is a zombie modification for Call of Duty 4, it features content from Black Ops Zombie mode aswell as from Modern Warfare 3 Survival mode and Ghosts Extinction mode. It's set slightly in the future with some weapons from Ghosts, Black Ops series and Modern Warfare series.
And more preview.
Categories are filled with the weapons. Attachments content will depend on your current weapon.
Good Job! Can't wait to play v 0.6 :DDDD