Sir Arun wrote:Do their weapons count as hull mounted and therefore limited to a 45° fire arc?
They don't count as hull mounted, but they do have a 45 degree arc, defined in the walker rules.
I remember in previous editions there being some kind of additional sentence that said walkers have a 180° fire arc but this didnt make it into 7th, did it?
They've had the 45 degree arc to the front for quite a while now. The difference is that in previous editions they could turn to face their target in the shooting phase, which effectively (well, at least under the most common interpretation of the rules) gave them the same all-around fire arc as infantry.
That's gone now... They just get the 45 degrees to the front.