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Electrical or firing issues.

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this is m4 tactical.


Original problem. gun on semi and it fired automatic than semi on its own resulting in mosfet melting and breaking.


Now, put all together and fired it on semi than it fired on auto without stopping than I had to unplug battery.


suggestions? Thanks for helping. much appreciated.



P.S. - Maybe what would help is understanding how the gun works when on semi it fires auto, visa versa, than on semi it firing auto without stopping.............

Edited by Chedeath

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