Here is a little gift to all my readers. The link below allows you to download a 2012 version RVT project that contains In-place and Component versions of families that are of the Category ‘Stairs’ and ‘Railings’.
Revit does not allow this to happen out-of-the-box, so you can be sure that this hack is not best practice, and it won’t be supported by Autodesk. Use at your own risk!
Having said that, if you know what you are doing, these families could be quite useful to you.
RFA Railing Category