ARES New Electronic Circuit Unit for for ARES M4 Series (Rear Wire)

ARES E.F.C.S. Electronic Circuit Unit for M4 AEG (Rear Wire) Enhanced ABS & Precise Magnetic Sensor - Improved Piston Position Withstand Higher Firing Current Up To Around 30A Withstand Rapid Semi Firing Maintenance Free from Dust or Grease. Light & Fast Trigger Response Adjustable Trigger stroke Distance Low Power Motor Initiation Rear Wire Set