My husband spent hours mounting the like and is very fragil (castings spend their time dislocate) my 10 year old son never play with ... it can not re-build one. .. too complicated for a child of that age (though it has a year ahead in school .... look for the error.) It's very nice mounted, but I do not advise it as a child's toy, but rather as an object for a SevenSun collector of Star Wars ... !!!