Tokyo Marui Glock 18C Full auto issue

[SierraGulf1]

Hey guys.

I have a Tokyo Marui Glock 18C I bought it second hand, Had a play fired fine on semi and full. I then took it apart and gave it a good clean and lube etc put it back together and now it will not fire full auto, it will fire a round then require re cocking to fire again, to which it only fires one round. I have totally stripped it back to every component and rebuilt it today to which no difference.

Is there any common faults as i have done a google and not much comes up and im also struggling to find a manual etc.

Thanks in advance!