[Slamfire]

If the Garand is all original to its date of production I would not do anything other than clean and oil.

If the Garand is an arsenal rebuild, a Blue Sky thingy, reparkerization, a new barrel, steam the dents out of the stock and tung oiling will make it look better and shoot better.

If you take the second option it is likely you will put more money into the rifle than it is worth, but it will be a great rifle.