Found this info over at WarriorTalk
Yahoo! Answers - How do I legally import and carry my gun in Guatemala as a US Citizen? Yes, you can. Solid info is scarce.?
Wonder if they have tourism?
Would I want to go is the question. Wife keeps bugging me about travel but I won't go anywhere I can't protect us. But no need to go somewhere I am guaranteed to get in a fight. So here's what I found out about Guatemala:
Guatemala - Wikipedia, the free encyclopedia
Guatemala Travel Information and Travel Guide - Lonely Planet