Guess I dont really upgrade any of my handguns.

Maybe accessorize a little, as I make sure I have several mags for each, and for the 9's an Uplula loader.
After that, my coin goes to ammo and range time.

I don't have need to change any actual components, as I can do from pretty good to very well with them all in stock form. And I can jump from a stock full size MP with its "regular" trigger to my PC Shield with its improved trigger, without any issues. Maybe that came with range time...

just my .02