These work so well, the military and industry no longer slather guns or machine parts with grease for storage.
Guns are protected for 10 years, AND can be simply taken out of the bag and used, which is why the military uses them.
You need special "Vapor Paper" sheets and special plastic bags.
DO NOT use ordinary plastic or plastic bags. Ordinary plastics will pass moisture, and will allow the vapor to escape.
The special "hard" plastic bags are made of a plastic that won't allow the moisture to infiltrate or the vapor to escape.
To use, wipe the metal off with a patch lightly coated with CLP Breakfree, leaving a THIN coat of CLP.
This will neutralize any finger prints.
Then wrap the gun in Vapor Paper, and properly seal in the bag.
For long term, or harsh condition storage, wrap in several sheets of paper.
Among other sources, you can buy the Vapor Paper in various sized sheets and both pistol and long gun sized bags from Brownell's Gunsmith Supply.
www.brownells.com/aspx/NS/store/ProductDetail.aspx?p=1197&title=GUNWRAP?%20PAPERwww.brownells.com/aspx/NS/store/ProductDetail.aspx?p=1154&title=TRIPLE+TOUGH?%20PREMIUM%20STORAGE%20BAGSFor SHORT TERM storage:
www.brownells.com/aspx/NS/store/ProductDetail.aspx?p=1515&title=RUST+BLOCKER+GUN+SLEEVES