Parker Trojan trigger return spring?

[Chaz Doebler]

From what I have gathered original Parker trigger return springs are made of unobtainium.

Has anyone found a source for something else that works?

Those of you who have made your own, any hints on construction/material?

Thanks,
CHAZ

[Brian Dudley]

The early ones are a flat stamped type spring. Later ones are a wire type.