I am looking for the same trigger spring . VTI was the only site I found that even mentioned the old style. Its unavailable . Any ideas on getting one?

Looking for a Uberti trigger spring old style . Checked mutiple web sites and only one ( VTI ) had anything close and it was unavailable . Any help would be awesome and thanks for any help It was imported from Navy Arms and is stamped Mod. 66 Sporting Rifle on the top of the tang . .38 sp is the cal...