LV tier 3 blaster turret

I'm going through the LV unlock now, currently on tier 3. So far I feel like this is the easiest GL I've unlocked (and including him I've got all but GLAT and Hondo) - my GAS is already pretty beefy and it seems like the borrowed units are all equal to the task...didn't even have to Iook at my mods once. One weird thing I'm seeing though...on tier 3, my clone troopers have a blaster turret but it never seems to assist, neither when the ARC Trooper takes a turn, nor when whoever else he's delegated goes. Isn't hurting my chances, but it seems like giving that ability to anyone else is a wasted turn, at worst. Is that a bug or did I miss something reading the notes about that tier?