Armory System Glitch ?

Hey, Today a couple of chill guys got on my Friends server. And they were spawning in guns my Bypassing the Netcode, and using the Armory exploit they said. But i have found nothing on it Any Clues ?

name of server?

Bypassing the Netcode

Oh i remember that addon, ye some Police armoury addon that let police get weapons from an armoury, you could use it to spawn in weapons that are in the config