I qualed with my Gen5 G17 and almost pulled one out from 25 yards. I need to get used to it as it seems to have a left drift with centered factory painted night sights.
Course of Fire
25 yards 5 shots from behind cover
15 yards 10 shots w/mag change
7 yards 5 shots 5 seconds
7 yards 10 shots w/mag change 20 seconds
5 yards 5 R/H and 5 L/H
3 yards 2 shots from a level 3 duty holster 3 seconds
https://i.imgur.com/8p3lrjLl.jpg
A co-worker was with me and I shot his Gen4 G17 with Hackathorns. Man that front sight is wide with a huge rear notch. I shot the same target and shot 5 from the 25 at the head. The front sight dam near covered the entire head at that distance. I recall my sights being left and right of center when it off.... shows on the head.
The rest of the 45 rounds, I aimed at low center of the target. His gun shoots good, but the Hacks are challenging at 25 yards.
https://i.imgur.com/NuA7y0dl.jpg