Trigger not engaging on KSC/KWA g18
 

Well it's not that it doesn't engage it's just that when I rack the slide and return it to the forward position slowly the trigger doesn't engage, but when I rack it back and let it go on it's own power then the trigger engages.

Is this a normal problem with KSC/KWA glocks? or did I just break something?

take off the slide and check underneath it in the rear where the rear site screws in, see if that screw came loose and needs re tightened.

nope it's tight

Not sure what to tell you. I just got mine about a week or so ago. Hopefully someone else who knows more can help. Good luck, hope it's nothing serious.