At around 15:30hrs on Saturday, 28 March, police were alerted to a firearm seen in a vehicle.
Armed officers were alerted. At around 16:00hrs, the car was stopped in Derby Road, Enfield.
A firearm was recovered from the vehicle along with a sword and a knife.
The four male occupants of the car were arrested. They have been taken to a north London police station where they remain in custody.