I need some Gunatic help

A friend of mine just picked up a winchester model 67 .22 at a garage sale. Its got a lot of surface rust on the barrel and the bolt. It looks like there may be a bit of rust on the inside of the barrell as well. Other wise it seems to be in good working order. the springs all look good as does the firing pin. The question is What should he do to get it cleaned up and in safe firing order. He is not to worried about getting the bolt re chromed but would like to re blue the barrel.