So after selling the gen 4 I bought in April and regretting it I bought another yesterday! My first one had a few problems in the first 50rds with store bought cheaper HP's then it was fine. But this one is 100%! I took it to the indoor range today due to weather, 150 rounds out to 25yds. 25 weak hand, 25 strong hand, and the rest two handed at 10/15/20/25. Accuracy is dead on, no malfunctions at all. This one has the "01" spring. Best part is it ate all 150rds of my reloads, which are pretty mild loads I use for comp/practice. I did then shoot some of the HP's I carry just to make sure, but I wanted to see if it would eat ammo that makes Federal champion look potent without breaking it in first and it did!