Nope.
Available only as complete trigger assembly.
KRG has one for the TRG-S/M995, but not sold separately (and might not work anyway).
I printed one:
View attachment 7948100
But the finnish and fit isn't 100% and it's a prototype for when I can find someone to make an aluminium one for me...
If yours is broken, I wouldn't mind a few pics of the trigger catch assembly and data regarding what spring is used (and exact location).