A Tucson man, Brian Jesus Hernandez, was arrested and charged this week after he was caught selling firearms without a license on Snapchat and possessing firearms without a serial number.
During an investigation, detectives from the Tucson Police Department discovered that Hernandez was using a Snapchat account to advertise and sell firearms. On November 17, 2022, Hernandez sold a fully automatic 9mm pistol with no serial number to an undercover detective from the Tucson Police Department.
On February 6, 2023, Hernandez sold a “drop-in auto sear” to an undercover agent from the Bureau of Alcohol, Tobacco, Firearms and Explosives. A drop-in auto sear is a conversion device that allows a semiautomatic AR-15 style assault rifle to fire fully automatic. Hernandez told the agent that he made the device with his 3D printer and showed the agent a video that gave instructions on how to use the device. That same day, agents executed a search warrant at Hernandez’ residence. They seized two 3D printers, four firearms, and various firearms parts and took Hernandez into custody.