
Two routine mid‑July traffic stops in Vallejo ended with officers pulling loaded guns off the street, including one fitted with a device that can turn a semi‑automatic handgun into a fully automatic weapon, according to police.
The Vallejo Police Department shared photos and a transcript yesterday detailing the stops, the firearms recovered and the arrests that followed, in a post on the department’s Vallejo Police Department Facebook page.
In that post, police said officers made traffic stops on July 11 and last Sunday that each turned up a loaded firearm. The photos and OCR transcript show a 50‑round drum magazine and describe one gun as equipped with an auto sear conversion device.
Legal Context on Conversion Devices and Magazines
Federal officials classify small drop‑in conversion parts, often called auto sears or Glock switches, as machine‑gun conversion devices, and say possessing or trafficking them can trigger federal criminal charges. The Bureau of Alcohol, Tobacco, Firearms and Explosives has made prosecutions involving these conversion parts a priority, and recent cases and press releases show the agency pursuing them aggressively.
On the state level, California law imposes strict limits on high‑capacity magazines. The California Department of Justice explains that state rules broadly bar the manufacture, sale or import of magazines that hold more than 10 rounds, and in many situations, simply possessing such a magazine can be treated as a crime.
Stops, Recoveries and Arrests
According to the Vallejo Police Department Facebook post, the first stop occurred on July 11, when officers pulled over a silver Mercedes‑Benz SUV after spotting unlawful front window tint and what they described as an unsafe turn. Police said the adult driver agreed to a search of the vehicle, and officers then found a loaded firearm fitted with an auto sear, along with an extended‑capacity magazine and a 50‑round drum.
The post states that the driver had a prior conviction for being an addict in possession of a firearm and was driving on a suspended license. Officers arrested the driver, booked them into the Solano County Jail, and released the vehicle to a family member, police said.
Eight days later, officers stopped a purple Nissan Altima without a front license plate, the department said. During an inventory search, police reported finding a loaded firearm hidden under the driver’s seat. A records check showed the driver was 18 and had never been issued a California driver’s license, according to the post.
Police said the driver told officers the firearm came from Richmond. The gun was seized and booked into evidence, and the driver was booked into the Solano County Jail, the department’s post states.
Enforcement Beyond the Local Level
The Vallejo seizures are playing out against a wider backdrop of federal action on illegal guns in the region. On July 24, the U.S. Attorney’s Office for the Eastern District of California announced a federal grand jury indictment in a separate Vallejo case, after deputies discovered an AR‑style rifle and multiple magazines during a vehicle search. That case was cited as one example of coordination between local agencies and federal prosecutors.
Recent moves by federal authorities and the ATF highlight a continuing focus on illegal conversion devices and high‑capacity magazines as part of efforts to curb violent crime.
In its Facebook post, the Vallejo Police Department also pointed to these two traffic stops as examples of how proactive traffic enforcement can surface illegal firearms before they are used in violent incidents. The department linked the work to its PACT program, which stands for Partnership, Accountability, Consistency, and Transparency.









