Maybe next time when I get a chance to take the gun apart, I will rinse those screw and screw holes with brake cleaner, then apply light duty thread locker to them.
won't be suprise the part number 45 breaks often, since it's main part of blow back assembly. Also the metal used is rather soft. feels like they are cast aluminum.
Hmm... cast aluminum, maybe I can polish them to mirror shine finished, if it's steel, then I can dip it in chrome. j/k.