This is the Bubba fix - wash it down with Murphys soap and warm water. Wipe it dry and let it sit. If it is a real oil finish then Slacum is the traditional cleaner/restorer that leaves a slight oil wax residue with each application. This is a mix of Turpentine, Linseed Oil, Carnuba Wax and Venice terpentine. No silicone and usually no Citrus oil although some version might have the latter.

Parker Hale, Clive's Lemon Oil,Napier, Purdy and Wart Hog sell this premixed. Try the Double Gun Shop if you can't find it elsewhere.

"When you disarm the people, you commence to offend them and show that you distrust them either through cowardice or lack of confidence, and both of these opinions generate hatred." Niccolo Machiavelli