PPK, PPK/S. PP, P5. PPK/S .22, PPX 9mm. P99c. CCP PPS M1 .40. PPS M2. PPQ .22. PPQ .40, PPQ Q4 SF,
I suppose we could just use Glow-On paint to give us "poor man's" night sights. I added it to my PPX and works very well. May try it on my CCP.