kand-corp:
First of all, welcome to the Forum!
The R9, being the smallest and lightest handgun chambered for 9mm Luger, is necessarily built to tight tolerances. Feed it the proven brands of quality ammunition, keep it clean and well-lubricated, and let it cool down a bit between strings of fire during range sessions and it should prove to be flawless for you. This pistol, in my considered opinion after carrying No. 132 since May 2004, is quite simply the finest pocket pistol yet produced.
Welcome again, good luck, and stay safe.