In this guide I will show you how to modify the gmod-mw-tables.lua file of GMW2019 by adding custom weapons to the list
Prepare this link for later, it's gonna be more than useful: https://pastebin.com/bwWUgJva

First, open the pastebin link above and save it in your Garry's Mod addons folder like so:
It does not matter what you name the addon folder, as long as the addon can be loaded.
The name of the Lua file must be gmod-mw-tables.lua

After you're done, open the file in your favorite code editor.

This is what you're going to see when you open the file. Scroll down until you see the MW.Primaries table.


Here you can modify the weapon selection, including the lethals, tacticals, pistols and primaries. You can modify the tables with a valid classname for a weapon.

In order to get the classes of the weapons, you must go in Sandbox, open your spawnmenu, go to Weapons and choose the weapon. When you do that, you right-click the weapon and press Copy to clipboard


After you do that, the string might come out like "weapon_cod4_ak47". It will be different for you.
So what you want to do is put two quotation marks " ", put a comma after them, " ", then put the class of the weapon inbetween the quotation marks like so: "weapon_cod4_ak47",


It does not matter if you put the weapon in Primaries or Pistols. Heck, you can put a whole LMG as lethal equipment if you want that. Go crazy with it.