As a long time user of the Glock 19 (Gen 2 & 3) I'm interested in seeing the results of the Gen 4 G17.
I've read a few places that there were some initial growing pains when the Gen 4 was released and that a considerable amount of malfunctions followed. Has Glock released different iterations of the 4th Gen to address these problems? If so is it possible to determine which iteration this is, possibly using S/N? I look forward to reading the results.