This actually comes from friend of mine, so I'll try to describe his situation accurately.
He has firearms he never shoots, and doesn't have room for a full-blown gun safe.
Now, the setup is that we all know how bad it is to store firearms in a plastic foam-lined case due to moisture issues.
His solution is to get one of these CaseCruzer watertight cases.
http://www.guncruzer.com/m4/4-pack/4pack-index.html
Supposedly it has an o-ring around the lid, and the EPDM material has an indefinite shelf life. To boot, it also has automatic purge valves which equalize air pressure changes, yet do not allow moisture in (they also do not allow moisture out and so the manufacturer recommends you store your firearms with a couple of desiccants). The manufacturer claims this case is extremely durable and impervious to water, dust, etc.
I'm not sure if this is the exact case he wants to order, but it meets all the specs he quoted, and I looked at it thinking it's pretty cool.
My answer to him was: "I'm old school. To me a gun safe with goldenrod or desiccants is the way to go. A plastic case is a plastic case as far as I'm concerned."
After reading up on this and similar cases, though, I'm beginning to think this one might actually be different and that's why I'm running it past you guys before I tell my buddy, "NO, don't order one."
What do you think?
I think it would make a helluva case for a long range day where you might shoot multiple firearms, but long-term storage? I don't know.
Burglary considerations aside (another issue), do you think a case with the features claimed would be good for long term storage, as long as one puts dessiccants in the case to catch any moisture that might happen to be trapped inside when you seal it up?
I've read various threads on the net, and the responses range the full gamut from "my guns rusted" to "I live in a humid area and I've had no problems in X number of years."