I wanted a lighter DA trigger pull and went with the CGW extended firing pin / lighter firing pin spring. Then I used a spare 14# hammer spring I had (from the CZC tuning springs, the orange one). Only other change from factory is that I'm using a 507K red dot.
Put through 5 mags. I used the two that came with the gun, then also some P-10 C mags, both the 15 and 17 rounders. Zero malfunctions. Have to say this is the softest shooting 9MM compact I've shot so far.
Going to give it a few more range sessions to make extra sure there aren't any light strikes, but so far so good.