It is my personal opinion that while Renwax is a fine product (have it myself) it is not very practical to be used on working firearms. Each time the gun is shot and cleaned it would then have to be degreased and treated once again. This is a lot of work and IMHO does not offer the same level of protection from moisture as does oils and preservative greases. Believe it or not I do use the Renwax but not on guns at all! I find it to work alright but would not trust it in the prevention of rust. YMMV.

I could see it if you were making a shadow box for a prized pistol or something and never intending on shooting it again, but for a gun that is going to be used - nope!