Help with modding singleplayer Zombies


New Member
I'm very new to this forum (just started an account here actually) and I just wanted to know how to add weapons to each zombie maps? For example, in each of the zombies map there are a limited amount of weapons (so there's no AK, UZI, Mac, M60, etc) and all I want to do is make a mod that adds all those guns into the mystery box. So would anyone know how to do that or point to a tutorial that shows me how to get the weapons and "port" them to the mystery box of each map? Help would be much appreciated! Thank you for your time in advance!