I am considering getting a LCT or kingarms AK fire selector to remedy the loose fire selector issue. The main differnce is the screw on the LCT,Kingsarm fireselectors are thumb screws allowing the user to just tighten the screw by hand when it comes loose.
It beats prying the fake cover which usually gets damaged or lost that way. A selector switch of a stronger material can act like a leaf spring by putting tension on the reciever.
All of the above concepts are already built into the realsword line of rifles. I wish other companines would adopt it but change is slow sometimes.