Yes, of course.
I don't think any stations will really enforce "no gun law", because everyone will be armed, even miners.
But hidden turrets offer quite some other advantages:
they can't be sniped off,
enemy can't see what he's facing until you start shooting,
Smaller profile lets you fit in smaller hangar (and be smaller target),
You protect guns from environmental hazards (i.e. space dust),
you can repair/reload them while safely hidden inside.
And probably many more.