The one you have with you![8D]

Honestly, I would say that if you are going somewhere where you might need a weapon to survive, then I wouldn't skimp on a little rimfire or rimfire/.410 bore combo gun. I'd probably take a pump shotgun (12 or 20 gauge, but probably 12) with a smoothbore slug barrel and a few shells each in birdshot (#6 Field Loads), buckshot (000) and Foster slugs. It'd allow you to deal with just about anything ranging from taking small to medium game to eat, to protection from a large predator that might fancy eating you. Good snake medicine, too.

Mike