I got a small SentrySafe at tractor supply on sale for $200 a couple years back http://www.tractorsupply.com/sentry-...k-safe-4061927. It's not fire rated but it's a lot better built that my stack-on.

I like to just keep adding small 10-15 gun safes. They're easier to hide, easier to move, and any thieves will have to get into multiple safes instead of just one.

Lag it to the wall anyway, so what if it's a rental it's just a few small holes. If you're worried about it put some mud/spackle in them when you leave, they're probably going to paint anyway. I've done it at two rentals and neither had a problem with it, and I didn't bother to mud either when I left.