I purchased a used Penn rifle a while back and have been enjoying the heck out of it. I noticed when I got the rifle that the outside surfaces were excellent but as I took the lock off there was a bit of tarnishing on the metal. I cleaned it up with some metal polish, a toothbrush, and some elbow grease--lubed it up with a light and put everything together. I have not shot it in a while (a month) and removed the lock last night and some rust was present. I usually clean in and out with soap and water, blow dry the parts with compressed air and spray them up with G-96 (my gun oil for those blasted new-fangled modern guns). I think the issue is more to due to the lock being bare metal. The builder of this rifle never "finished the lock. I thought the oil would do the deal but I can't stand the rust thing. I might be putting the rifle back together without having a totally dry stock, but I am pretty careful trying to maintain this rifle. Would you guys wax it, grease it, finish it,? Any help with this would be welcome. Jim