Congrats on your find and welcome to the forum. You can remove the action from the bedded stock, you just shouldn't do it any more than necessary as it will loosen the bedding. There have been known to be markings under the handguard. You can remove the handguard w/o removing the action from the stock, but I believe that requires removing the gas plug and gas lock and sliding the gas cylinder forward to get the handguard clip out of the groves on the barrel. Then it will lift off. But it may be epoxied to the front band also, so you might look for that before you try it.
I suggest you start a new thread with pics!
I suggest you start a new thread with pics!