Firespray and Tacticion

By Rakaydos, in X-Wing Rules Questions

Does the Firespray's secondary arc (or the Y666) allow the use of Taticion?

Yes, because Tactician says "inside your arc" and the rear arc is an arc. If they had meant for it to not work that way, it would have said "primary arc".

The ONLY thing that the Primary arc can do that Auxilary arcs cannot is use secondary weapons.