I would like to cache three AR’s in a wall in one of my storage areas. The six inch wall is within a closet with a removable panel for access. The storage area is lined but not air tight. The closet is opened into a room that I cool in the summer at about 78 degrees but do not heat. I live in a humid area with 70-80% the norm. I need to know how to prepare the guns for long term storage. What to enclose them in, what type of prep for the metal, oxygen absorbers, desiccant packs, etc. I was thinking about using Z-Corr bags (http://www.midwayusa.com/product/127346/z-corr-tactical-firearm-storage-bag-47) but is that enough? Thoughts and advice appreciated.