(Problem handled) My stock Echo1 may be too hot.

[vess]

while i was there I bought a Madbull m100 from Chaffin (I think).
I just put it into my AK. I got everything in there fine, however when I try to do semi auto, the trigger will not reset on its own after I fire. I have to lift it back up myself with my finger. It goes back really easy and locks back to its original state, it just severely limits my semi auto function for the gun. Full auto on the other hand, works just fine and returns the trigger after I release.

But after testing in my backyard, my accuracy has increased incredibly with the (actually) lower power spring. I'm guessing that my gun is right around 340-350 fps right now based upon it being slightly longer than the Sp120 spring which itself was longer than the stock spring.

[Ghast]

Hmm, I expect perhaps the fire selector or MAYBE the trigger spring. Just tear it down and make sure everything is seated right. That usually fixes 90% of gearbox related problems.