" DITTO " King ,, I just rebuilt a 45-60 and cold blued all made parts,, then lightly " rubbed off the bluing , ( alcohol & water ), to give it that aged look,, your new parts are salt blued ( I could be mistaken ) , use Ace-tone ( finger nail polish remover ),, or you could just shoot it ,, 120 years
?? ( lol) When using alcohol & water , leave the pieces wet,, let set for a day or 2 , it will start to rust lightly,, clean with alcohol ,, then use cold blue on parts to the desired look you want ,, YMMV ,, mine looks very used ( not abused ).
coffee's ready ,, Hootmix.