General Taskeen, on 05 November 2013 - 08:10 AM, said:
Those aren't the chin turrets.
Chin turrets are just a visual representation of torso weapons, which are all assumed to have some gimballing to allow a degree of aiming without physically rotating the torso. This is WOG from the design team at Catalyst in this thread.
So the point is moot, the weapons wouldn't be on the arm cursor.