Hello
I am from Puerto Rico and was looking at the map on the front page and noticed it's outdated.
I took the liberty of categorizing puerto rico on the different maps.

http://www.opencarry.org/?page_id=103
Puerto Rico = non permissive
http://www.opencarry.org/?page_id=135
Puerto Rico = no unlicensed carry
http://www.opencarry.org/?page_id=139
Puerto Rico = N/A
http://www.opencarry.org/?page_id=143
Puerto Rico = Concealed carry generally legal(administration may forbid weapons but is not a legal violation you would just get expelled nothing more) - OC prohibited
http://www.opencarry.org/?page_id=150
Puerto Rico = Concealed carry allowed
http://www.opencarry.org/?page_id=154
Puerto Rico = Not legal for civilian possession
http://www.opencarry.org/?page_id=157
Puerto Rico = Legal (the person must be licensed by the state and you must submit in 10 days a form to the police department so your gun in the registry get's updated to the new owner.)
http://www.opencarry.org/?page_id=159
Puerto Rico = Carry not staturorily prohibited
http://www.opencarry.org/?page_id=162
Puerto Rico = Requires registration of all longuns and handgnus
No grace period you cant have posesssion if you dont have a license (they must be turned to the police deposit while you get a license (4 months))
http://www.opencarry.org/?page_id=164
Puerto Rico = Constitutional carry not yet available.

Ill work on updating this forum with more legal information regarding to Puerto Rico.