SA2 you mention the Hurr IIb.
It was a stop-gap between the IIa and the IIc. 8x303cal weren't doing it so they put 2 more in the outboard portion of each wing (total 12x303cal), but it STILL wasn't doing the job, so they delegated the non-fighter jobs to these planes, including adding bomb racks on them and calling them "Hurri-bombers". Putting on the bomb racks, if I read this correctly, meant that 2 guns could not be used.
While it would increase the firepower by 50%, it would disperse the weapons out like the spit1's wings, making convergence a larger problem, and due to the increased weight and the distance it is out on the wings, plus all of the ammo, and the changes to the wing to get the guns and ammo in there at all, I think it would be far heavier than a Hurr with 4x303 and it would be more fragile (weaker wings, more stress loading) and it would only fly as well as a HurrIIc, engine wise, and with those guns you might as well just go with the HurrIIc, as it will perform better and shoot harder.
But it's nice to see that somebody else knows about the Hurr2b (I didn't know it was in AW).
