No real idea what would be good stats for a Cybran absolver ACU tbh.
Range - 75
Fires - 2 times a second
Does - 1300 damage to shields
I'd put shield disrupter in the same current upgrade tier as chrono, so around early-mid t2 stage.
So: 1500 mass cost, 50k e cost, 1200 bt cost
I'm not sure if it's better served as a back or right arm upgrade. If it's on the back it means you remove the stealth + gun + disruptor combo. I feel like having it on the right arm would be alright, gives it more utility as its the least used upgrade arm for Cybran and stealth isn't such a huge advantage that you cannot allow the ACU to keep the combo.
Then I'd say the gun itself should do:
Range - 35
Fires - 1 time a second
Does - 1500 damage to shields
Mainly chose 35 as I don't really see why it should have less range than something like an Aeon ACU with chrono. The gun itself doesn't actually directly harm units so it can't really be abused for more damage. This also allows Cybran to put damage on either Aeon ACU or shields directly near it.
Damage I don't know, just chose round numbers that didn't seem too OP 4head