You could refinish it in a variety of ways, cold blue it yourself, duracaot ,gunkote, cerakote, brownells sells a variety of do it self coatings including teflon coatings. You need complete disassembly guide with a parts diagram or take a lot of good digital photos of the disassembly so you can put her back together. it is not a tough one to do since it has a removable side cover on the right hand side. Prep is important- need to completely degrease all parts Then I bead blast all parts with 120 grit aluminum oxide then degrease and hang all parts on my racks before aplying -duracoat, gunkote or cerakote then I bake them in my coating oven and reassemble after curing. You can make small racks out of poplar wood and dowels , use real thin brass picture / hobby wire that you can get at the hardware store to hang the parts on the racks then bake in the wifes oven ,won't ruin it but there will be some order. you will also need a small air brush setup or hlvp mini spray gun to coat the parts , or use something from brownells that comes in an spray can .I use brake cleaner in a spray can form to degease all metal parts and gun scrubber polymer safe for all plastics. One thing to note certain old plastics and polymers can not be baked use air cure coatings on those like the grips on that CZ70. You also need some basic handtools brass and steel punches and a small hammer. Brian / EFR
