ICS M4 Firing without pulling trigger.
 

Hello everyone, I have an ICS metal M4 with the split gearbox. Yesterday when I pulled it out of storage and hooked it up to a battery, it would continuously fire. I took it apart, it doesn't seem to be the trigger contacts sticking. On semi it work sometime and go I to little bursts of full auto, on fullauto it will just keep going and going. Also when I have it on semi, and I squeeze the body near the selector switch is would fire the gun. The gun has a MOSFET installed in it, but I got it that way, and have no idea what kind it is or how it's wired. Dunno if anyone has any suggestions, thanks!

pinced wire that's shorting... bad mosfet.

Had the same issue with my old ICS. As Lurking has said, best bet is a pinched wire or exposed wire some where. I would suggest having a look at the fet. Perhaps even remove the fet and see if the issue is still there. If it is not there then the fet was the problem. If the problem still happens then your best bet is a full rewire just to be safe.

Hope that helps.