This is a simple script I made to prevent people who use menus and hackers in general from spawning in weapons. This script does not prevent them from spawning in the weapon, but it does prevent them from using it. 

Faction Servers -- When you do your weapon drops to your factions, as you spawn in the weapons as an admin, you'll have to write the serial numbers down or copy and paste them for the developer. Once the developer has them he or she adds them to the config, and restarts the script (this can be done while the server is active, it will not cause any lags). Once the script is restarted the players will be able to use the weapons that are whitelisted. 

If the weapon isn't whitelisted, and a player tries to use it, I set up a discord webhook, and the player gets banned from the server.  So as an admin you have to make sure players aren't using guns before they are whitelisted or they will be banned.

Non Faction Servers -- You will have to change up how your players get guns, and make them come from staff members. So staff can whitelist the serial numbers. If you don't want to do that you will simply have to make players make discord tickets to get their guns whitelisted after buying them on the streets.

Preview Video -- https://www.youtube.com/watch?v=r8tnvLUtI8w