Lambton OPP seized a weapon, drugs, and counterfeit money during a traffic stop Monday morning in Plympton-Wyoming.
Officers searched a vehicle pulled over on Oil Heritage Road at around 4:30 a.m.
Police said a passenger was arrested without incident after allegedly producing an unspecified concealed weapon.
Officers also seized narcotics, marijuana, counterfeit currency, and tools.
Christopher Hammond, 24, of Sarnia is charged with carrying a concealed weapon and failing to comply with an undertaking.
Kim Brennan, 48, of Plympton-Wyoming is charged with possession of a break-in instrument.
Both men are also charged with two counts of drug trafficking and possession of counterfeit money.
They were being held in custody awaiting bail hearings.