We do like the MP5 AEGs from ICS Airsoft, as they had features that were years ahead before being introduced in AEGs especially its electronics. They have become updated now and the ICS MP5 CES-P A5 S3 AEG with retractable stock available at Unlimited Co. in New Zealand comes with Dual Mosfet System, electronic trigger, and Self-Diagnosis function. Power gets cut off when you open the receiver and the gearbox is signature ICS Split Gearbox.