Sometimes expedition teams do require additional firepower. Lethals straight up increase their odds of not having the whole team wipe and not make it back to the station. However, they should still get those guns in a responsible way. Request them from the armory, or have the solution be what was proposed earlier.
Im all for expedition teams using guns and actual weaponry, but they should be obtained in a more reasonable and responsible way than just ordering themselves an entire armory via the cargo shuttle.
Expeditions is in a strange place, salvage has kind always been like this but even more so with the addition of expeditions. There is just so much loot to be obtained that normally is not found anywhere else. Guns, armors, hardsuits, ext. can all be obtained via salvage or expeditions. While I do think that the salvage team should be able to keep their hard earned loot, i do see it being an issue where they defy security for trying to do their jobs and confinscate the dangerous equipment. I remember SS13 shaftminers and lavaland loot had this same issue. Except actual dangerous loot (guns, weapons) were MUCH harder to obtain. Perhaps weapons are too easily obtainable at the moment in ss14 via salvage mechanics?