And if so, how would that be applied in game?
Page 102 of Tactical Operations describes the use of machineguns in rapid fire mode, however it does not specify whether this can be used by aerospace elements, or how it would be applied in game.
If it is allowed, I would assume that the machineguns in rapid fire mode would use the average of their damage, as with other rapid fire weapons, And since heat and ammo consumption for rapid fire machineguns are based on the damage they do, that would determine those stats. But some official clarification would be nice.