Tick said
Roland only lets human males into his bunk.So, Nova doesn't have any guns (except maybe one or two that slipped them), right? Since they had to get past the checkpoint and the supply hasn't been found yet.EDIT: Are the two desk guards armed?
Although it wasn't explicitly stated, I was under the assumption that all of Quantum was armed with at least a pistol.
Mark's own weapons (Phalanx and knife) are on a table that I faintly recall the soda drinking turian resting his feet on when the Security Room was introduced.