TM ebb glock 18c

ok, the gun is having some weird problems...
as an ebb there is 1)the trigger 2)the 'electric trigger'
when both pressed down the gun starts to fire, when the trigger is realesed it wont stop firing
I've tried a few things but as far as taking the gun apart all i have be able to do is take off the slide.
does anyone by chance know if the barrel or any other part of the gun can be disambled to further my attempts to fix it...?