I am not sure on this but if I dropped my gun in the lake or something where the gun became submerged I would completely strip the gun. Clean and let it dry. To remove the recoil spring I believe that you must remove the butt plate then the stock. After that is removed you will have a round metal tube. You will need to remove the end that faces the butt plate, which is the stock retaining nut and the stock retaining nut screw. Then you will be able to remove the recoil spring, the Damper spring, damper pin, guide bush and the recoil spring plunger. I would get WD-40 and soak these parts, and EVERY OTHER part that WILL rust. Let them dry over night and then use a good gun oil on all the parts. Assemble the gun and good luck.