IPSC handgun rules 2019, Appendix D4 17: " Original parts and components offered by the OFM as standard equipment, or as an option, for a specific model handgun on the IPSC approved handgun list are permitted "
As this is an option provided by the OFM, it's perfectly legal in IPSC production division. Even if it would be an aftermarket component it would be legal this year, as aftermarket springs and trigger assemblies are permitted.
This of course as long as it meets the minimum required trigger pull weight.