And by "Weapons" I mean Ranged Weaponsranged weapons specifically. Melee weapons would certainly be useful for close-quarters, but due to the range at which combat occurs in this question, I'm looking for Ranged Weaponsranged weapons like firearms.
They must function in Zero Gzero-G, but functioning in a Vacuumvacuum isn't a necessity due to the fact that most of these fights are going to be taking place inside the space station.
Combat will be taking place in all kinds of distances, from long hallways to open hangars to enclosed residential areas, so any kind of range on the weapons suggested is fine.