I have a couple Gen 3 17s that work & fit my hand.

Glock has had well known problems with late gen 3s and early gen4s
The fix appears to be the new ejector marked 30274 for both gens plus the new recoil assembly for gen4s
I'm in the process of working through ejection issues with my gen 3 g19 by installing the 30274 ejector
Function is 100% just variable ejection
Troy

Thanks for the input guys. I confirmed that this piece has the new RSA and ejector so decided to go with the 9X19 gen4. I'll keep you posted.

Well went to the range. The very first shot FTE. The second shot FTE. WTF?
I adjusted my grip and the third shot fed and ejected properly. Fourth shot FTE.
Sigh.

One of the range officers came over and asked if this was my first polymer pistol. Yes says I. I told him I've been shooting a Beretta for the last 10 years.

Seems I got spoiled by the heavy Beretta. With the lighter Glock I need a "firmer" grip of sorts to keep more energy in the recoil.

Didn't have another FTE all day.

Nice pistol.