Gun laws in Puerto Rico regulate the sale, possession, and use of firearms and ammunition in the Commonwealth of Puerto Rico. As Puerto Rico is a commonwealth of the United States, many U.S. federal laws apply, as well as Constitutional rulings and protections. (1) (2) Summary Table Subject/Law? Long guns - Handguns - (Notes) Permit to purchase? No - No - (Firearms purchases are subject to the requirements of US Federal law) Firearm registration? No - No Assault... (GunPolicy.org)