Not a setting. If you place a properly-structured pk3 file in the right folder, it'll replace every sabre-hilt with a custom one.
Alternatively there are numerous mods like Forcemod, Jedimod, Jedimod+, and so on that allow players to choose custom sabre hilts, as well as additional features like using two-sabres, model scaling, RGB sabre colours etc. Forcemod's the best one though. With all of them, the sabre-hilt needs to be compatible to use it.
And wowie. Just realised how old this thread was.
