Decided to try some Ginex small pistol primers, as CCI SP are hard to find.
The Ginex SP primers work just fine for me in 9mm loads. As to being a "hard" primer, they seem no different in my pistol than the CCI SP's I use.
I have a Glock 48 with a reduced-power Striker spring, #4.5 (down from stock OEM #5.5) and the G48 has no trouble setting them off, just like it works with the CCI's.
Also a Glock 19x with a reduced-power #5 pound spring and perfect ignition every time.
My Sigs and CZ's,....perfect ignition.