I know of at least one American mfr., Hornady, that makes 7.62X39. Steel cases like the Rooskies and a better product than Wolf or Tula.
Of course you pay more too.
Hornady was *buying* the cases *from* the Russians. Since there is now a ban on the importation of Russian ammo parts, Hornady’s 7.62x39 Steel Match is now kaput after they run out their remaining inventory.