In a move to crack down on weapons from the U.S. that are funneled to drug cartels, police in Latin America will soon be able to track American gun sales in their own language, despite privacy concerns by gun-rights advocates.

The U.S. Bureau of Alcohol, Tobacco, Firearms and Explosives will begin testing this month on a Spanish-language version of eTrace, a computer system that law-enforcement agencies use to request traces of weapons by the ATF. The first users will be national police in Mexico, Guatemala and Costa Rica.