If you have a gas blowback airsoft pistol, like a CO2-powered or a green gas Glock, how long it will last, and how well it will perform in matches, are both products of the maintenance you administer from time to time.  Granted, you might never once unholster your GBB pistol during a match, but when you use it or carry it in the elements, it’s still important to remember that, just...