The discovery of the weapons came after officers from Goldsboro Police Department's Housing Unit, Special Enforcement Unit, and Gang Unit served a search warrant in the 600 block of Day Circle in reference to an occupant possessing Glock "auto-sears."
Police said an "auto-sear" is a device that allows semi-automatic handguns to become fully automatic. Officers found two "auto-sears" inside the residence.
Officers took a 17-year-old boy into custody.
Police said they will file juvenile petitions for two counts of possession of a weapon of mass destruction through juvenile court at a later date.
The teen was released to the custody of his mother.