Preliminary render of the Laser Hop-up from HPA System.
Something new is in the works by the best Russian engineers. Russia is quickly becoming one of the leading innovators in airsoft world. May it goes for AEG or HPA engines. What this guys come up is in my opinion is top notch upgrades founded on solid science and a lot of experiments.
This is only a render of what I think is the next evolution of hop up system for AEG / HPA systems.