1911's are pretty durable guns, take it to a gun smith to check out then learn how to break down clean and maintain it, if it is a true service weapon from WWII, it is quite valuable. Now one thing, to remember, if you take it to a gun smith, you will probably be required to fill out form 4473 to get it back when you pick it up. That is not a problem as long as you don't have anything in your background that could raise questions, I just mention it, because if there is a glitch in their system, which I see from time to time, then the gun smith would be required by law to retain the firearm, I am not passing any judgements, I would just hate to see someone loose an older valuable gun because their system messed up on something.
I am a gunsmith and 01/FFL, filling out a 4473 is not required for work performed when picked up