This thread seems to have more lives than a cat -- perhaps because of the provocative subject line.
Z has said it well just above. In any event, keep the R9 clean and well lubricated , feed it premium ammunitiion (none of that Russian s*** out there), change the outer recoil springs every 200 rounds or so (they're cheaper than a cup of "designer coffee"), maintain a tight grip when shooting it (this is the smallest and lightest pistol every chambered for the 9mm Parabellum cartridge and needs a firm platform for the recoil properly to feed the piece), and it will serve you well and for a lifetime.