Who can use civilian guns?

[Zeltak]

I think they are referring to Detroit Munitions. Which by the way manufacture Debilators. So theres the connection. And you also sometimes spot Xeno NPC's attacking that station , also Pueblo Station which also haves Debilators.

Edit: I'm pretty certain it's Detroit Munitions, I haven't heard of any other places called something with Detroit. They do mention Ageira which is the operating faction of the two stations: Detroit Munitions and Pueblo Station.