A4 Stuck in full auto

[globalogicom]

I have an A4 S-System by A&K. It is fairly new, less than 10,000 bb.

When the gun in in auto in continues to cycle in full auto even if I depress the trigger, sometimes it stops after a 5 seconds sometime not until the mag emptied or I drop the mag.

When the gun is in semi auto it normally does ok, but sometime continues to cycle acting like full auto. Occasionally it will only cycle a couple times and then stop, but usually it will empty the entire magazine.

When the gun is dry fired it works fine in both semi and auto. It only cycles once with 1 pull of the trigger. But when it is loaded it just keeps firing.

I have tired 2 different mags, with same problem.

Trigger does not appear to be sticking.

[surebet]

I was about to call selector plate but the dry fire bit threw me off.

[Kos-Mos]

You have a short somewhere. The magazine pushes on something just enough to let the wires touch.

[globalogicom]

Tested it with mag in and no bb's and it does not get stuck on auto.

If I take out battery, pull trigger, put back in battery, at first contact of battery connection it dry fires, even it is was on safe.

[Styrak]

Then you have a short somewhere or a complete circuit, which is not good. The gun will have to be taken apart and wiring inspected.

[globalogicom]

Wiring would appear to be the case, but the confusing part is that it works fine on dry fire, so thinking may be trigger switch.

[Styrak]

Originally Posted by globalogicom

Wiring would appear to be the case, but the confusing part is that it works fine on dry fire, so thinking may be trigger switch.

Which is part of the wiring/electrical system.