The Correo has 8 forward, 4 rear. So has the Grizzly (and probably the Bactrian?) I can't remember how the firing arcs of the RAT and the other House freighters are though.
For being an ship ment for raids, the Correos firepower is indeed low.
RAT has 7 forward, put a cap8 on it, and you can eat popcorn, while you loose in PvP.
The correo i tryed but the guns are to weak to even fight NPCs, 6 class 8 and 2 class 9 dooesnt change that...then again, that was with the old powercore.