[bshantz]

@Saverwing

My trigger has a late response as well, although I know what my problem is. When I swapped out for a metal receiver one of the trigger springs was in the wrong spot, not by much but it affects the reset.

Try taking apart your lower receiver (I know it may seem like too much work, but its not that bad) and re-assembling it.
Unfortunately there isn't much on the internet on doing this so go by explosion diagrams and also if you have a clear lower, it makes it easier as well.

Hope this helps