This script generically looks for parton level particles and saves their four-vectors into an ntuple. (This works via event generation in Pythia).
Known particle types are at the moment: jets, electrons, muons, neutrinos, LSP
Things that can be changed via jobOption properties: The max number of particles saved per event for every particle type; The pdg-id of the LSP.
(Go to Tools->Attachments to get the code.)