InfectiousFight

TEC do have two types of turret (essentially). Causs Cannon, Hangar Defense. Give the Hangar Defense some fighter squadrons, and you've got anti-fighter defense. Sure, the hangar defense isn't a 'turret' per se but it performs the same functions, and that's all that matters in a tactical sense.

Bullets don't need oxygen; all of the reactants are in the propellant. Otherwise, how could you ignite the propellant inside of an [I]airtight[/I] cartridge, or fire a gun underwater? Guns work perfectly fine in space; in fact, back in the 70's, the Soviets put a 30mm cannon on one of their early space stations (Salyut 2, to be precise) and destroyed a target satellite with it.

Perhaps it could be as simple as the Warzone 2100 unit designer...anyone here ever play that awesome game?

This is a gameplay, not a scientific point, but: Why is it that it takes tens of seconds to jump from planet to planet but merely ones of seconds to go all the way from stars to stars?