Adds 8 (15 counting variations) new turrets for dealing with alien menace, as well as other military-related items. Good compliment to mods that add new biter types, like Rampant or Natural Evolution.
The heavy MG (backline) firing arc is more than 180 degrees in the visualization but won't actually fire anywhere near as wide, seemingly not even more than a 90 degree arc.
Researched this - arcs wider than 180 are unsupported by Factorio and turret with higher arc set will revert to 90 degree arc, despite range preview showing otherwise. Update is up to adress this.