Two teenagers were arrested last week on suspicion of possessing illegal firearms.
According to a social media post from Tucson Police Department, officers located a gun in their vehicle with an extended magazine and an illegal conversion switch device.
They also located an AR-style pistol and body armor, the post said.
The passenger, a 15-year-old female, and the driver, a 16-year-old male, were arrested, and the vehicle was impounded, the post said.
