Are you running a milspec trigger or aftermarket? Any other trigger shenanigans like a super safety? I’m not sure I understand “lining up the trigger springs and disconnect spring”. A photo of how the FCG is installed in your lower might be helpful.

If only they’d had this legislation sooner perhaps a tragedy could have been avoided. Wait, how many of the Bondi Beach firearms were 3D printed? Oh, that’s right – NONE!

/s

Does that “every way” include respecting your privacy and not locking your data into a proprietary undocumented format?

I will grant that FreeCAD is not as polished as F360 (though it has improved significantly in the last couple years). It also forces you to be more disciplined about design and especially sketch constraints (which I consider a good thing). But I have not found a significant productivity difference between FreeCAD and F360 (once I spent the time to understand FreeCAD’s way of doing things).