I agree with King. WD40 will harden with age and become a real mess. My gunsmith that retired called WD40 one of his best freinds. When customers filled their 1100's with it and left them to sit for year he would get them in for a complete strip and clean.

I would use any good gun oil. Rem oil is one that is avalilable in almost any gun store and Wal-Mart as well in spray or bottle.

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