You've leaned to modify your energy weapons to be more efficient and resilient.
If you are in possession of this feat all energy weapons in your possession have an increased chance of a proc going off during a critical from 20 to 19-20.
Normal: Proc trigger on a Energy weapon is a nat 20.
This feat can be taken only once, however it does stack with similar effects such as Juggernaut Power link of the Combat Specialist class.
Combat Technicians and Scientists can use this feat on a vehicle if it has the appropriate energy weapon.