Costa Rica is not gun friendly...
“The government office that is responsible for oversight of weapon in Costa Rica is the Department of Arms and Explosives which is a division of the Ministry of Public Security and Police...
...The first thing you need to know is that only citizens of Costa Rica and Permanent Residents with valid permanent residency status are allowed to own, register or carry weapons in Costa Rica. If you have a Temporary Residency category you will be restricted...
...Confused ? That is the intent. Although the law allows the possession and ownership of weapons the reality is that from a governmental policy standpoint it is discouraging gun ownership by increasing the bureaucratic hurdles for those that want to legally purchase and own weapons in Costa Rica. You will more than likely need to hire somebody to guide you through the process gun registration process.”
http://www.costaricalaw.com/Security-and-Guns/guns-in-costa-rica-ownership-and-registration.html
They’re the anti-Switzerland.