I need to replace some springs in an old P230SL.
The factory small parts kits for the P232 dried up a decade ago.

Does anyone have any experience with Matrix Precision springs? I’ve seen people build up their Sig kits with success.

In my experience their springs were fine. Honestly almost everything was. The only thing I didn't like was the trigger shoe profile on the one that came in their kit, but functionally it was also fine. They're great to do business with, too, and have fast, affordable shipping.