Officer David Polanco stopped the Dodge Caravan bearing a Nevada license plate for several traffic infractions just before 4:30 a.m., Capt. Robert Kaiser said.
Approaching the driver, 46-year-old Victor Gonzalez-Rodriguez, the officer spotted a hollow-point bullet inside the vehicle, Kaiser said.
A consented search turned up a .40-caliber handgun, the captain said.
Gonzalez-Rodriguez was charged with weapons and illegal ammunition possession.
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