Inside Brazil’s 3D-Printed Gun Supply Chain

On June 26, 2026, the Civil Police of Rio de Janeiro, through its specialized firearms, ammunition, and explosives unit, raided a clandestine workshop in Rio das Pedras, on the city’s west side. Investigators said the group used a 3D printer seized at the scene to produce pistol frames and structural rifle parts in polymer and then completed them with metal parts. Early reports described those…