Having a problem with the firing pin on my optima. Last day of the season last year it was raining pretty bad. Must of had moisture get in to the firing pin channel. Now theres a bit of rust in it. Firing pin doesnt want too return too 'ready too fire position" without me manually pushing it back in.

Scary,, I put a primer in too foul the barrel closed the barrel and the primer went off as soon as I closed it. Opened up the hinge and firing pin was in the fired position. Anyone know of anything I can spray in there too get rid of the rust? or is it possible too dissassemble firing pin and trigger assembly too clean it out?