Depending whats on them already you can do a cold re blu ( little touch ups ), or get a smith to do a full re blu properly but $, otherwise fix and paint/cerekote over it and sometimes its best just to a) put it down and continue the search or b) live with it, but you have options.
Theres plenty of stocks around to re finish/ replace if you wish, and you've got to know what you want/ what to look for in an action/barrel youtube/google is your friend, plenty of milsurps kicking around and they exchange hands everyday.
But pretty much unless your wanting to spend 2-3,000 somethings going to need replacing/fixing/getting used to alot of these rifles have been through hell and back and they look the way they look because of it, adds a little character, on the bright side the're easy to work on
Well thats 2 long posts i'll let the others chime in
Best of luck mate