Tried the returned G30S today. A total of 260 JHP rounds, using all four magazines, both slow fire and double taps. All 230 grain loads. Speer Gold Dot, Winchester Ranger, Federal HST +P, Remington Golden Saber and Federal Tactical bonded +P. The G30S functioned 100%. Zero malfunctions. Whatever was wrong with it, Glock service corrected. All they said in their note was "inspected, upgraded, function fired, meets factory specifications."