Congrats on your purchase. I have a 372 as well. Nice gun but I have to admit it is heavy (especially in the ARM model). I assume (unless replaced) your tritium in your night sights is long gone. You can buy replacements, or, years ago I bought tritium vials and replaced my own for about $23.
If you can find a AA (Action Arms) magazine adaptor it will be worth the money (if you have other guns that take the M16 magazine). Now big question if it is in great shape- shoot it or keep it as an investment? I do shoot mine, but limited amount.
After I am gone you can have mine as well- but- you'd have to find my grave and dig it up. :O)