D.C. police recovered 31 guns, two body-armor vests and nearly 2,000 rounds of ammunition during two separate raids Sunday, and the police chief credited new efforts at getting the firearms out of the hands’ of criminals.

D.C. Police Chief Cathy Lanier has made getting guns off D.C.’s streets a key piece to her plan to stem violence in the city, and in November she established a 24-member gun-recovery unit.