The 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 change firing modes such as:

Safe + Semi + 3 Rnd Burst + Full Auto

Safe + Semi + Full Auto (The usual)

Safe + Semi + 3 Rnd Burst (Like a real M16)

Safe + Semi Only (If skirmish areas have a certain rule)