[Pfeil]

I have a new G&G SG553 (SIG series) AEG. The gun is stock with an M100 spring and chronos at 365 fps with a 7.4V LiPO. No feeding or performance issues.

My goal was to improve the trigger response and protect the trigger contacts by installing a simple Jefftron Micro Mosfet and adding a higher torque motor with neodymium magnets to replace the stock G&G one (weak magnets).

After successfully installing the mosfet, the gun fires perfectly with improved trigger response. HOWEVER, it always dry fires the first round after a new magazine is inserted. The nozzle does not cycle to its correct position after firing and is partially visible in the feed tube (3 mm). I assume it is cycling too far and moving forward into the next firing cycle. The nozzle moves forward and then back after firing, so it does not feed a BB on the first shot. I did NOT open the gearbox for the upgrade and the gun is properly reassembled.

This happens with the mosfet installed (with the original or upgraded motor) and also WITHOUT the mosfet installed and just the upgraded motor installed. Removing the mosfet and using the stock motor solves the problem.

I have also tried a hardwired Burst Wizard King Kong 2, which supposedly has some form of active braking, but the gun still does not fire the first round after inserting a new magazine.

Is there anyway to solve this issue so that I can use a mosfet and the new motor for improved trigger response? My field limit is 350 fps so I cannot install a stronger spring.

Thank you all for your feedback!

Pfeil