Ascu Gen Iii + For Gearbox V2 Airsoft SystemsThe ASCU 2 is so small that it fits inside a Version 2 gearbox and it acts like a computerized MOSFET system making your AEG fire with precision which could be compared with a PTW. It's all computer controlled and has sector gear monitoring so one trigger pull is a complete cycle making it have a realistic, crisp trigger. It's compatible with LiPo, LiFe, NiMH, NiCd from 7. 2 12 Volts. No modification to the gearbox needed. No soldering needed. You can