So, technically, a PPC/AC10 doesn't pop this thing with a side or rear hit. It's dirt cheap and with a small enough crew requirement to put an obscene number on the field regardless of your currency (BV/C-Bills/tonnage/whatever). Load them up with flak ammo as a swarm of defenders around an aerospace vulnerable zone and I can see a very surprised attacker.
I may well steal these for a dirtbag militia force in an upcoming game.