custom_ammo_system.zip

This download looks like a lua file. You need to place it in your lua folder inside the Garry's Mod folder.

You should end up with a directory structure similar to below:

• steamapps
  • common
    • garrysmod
      • garrysmod
        • lua
          • autorun
            • custom_ammo_system_core/
              • info.txt
              • lua/
                • autorun/
                  • server/
                    • sv_cammo.lua
                • weapons/
                  • base_cammo_weapon/
                    • cl_init.lua
                    • init.lua
                    • shared.lua
                  • cammo_example/
                    • shared.lua
            • custom_ammo_system_powerful/
              • info.txt
              • lua/
                • weapons/
                  • cammo_counter/
                    • shared.lua
                  • cammo_counteruber/
                    • shared.lua
                  • cammo_dopple/
                    • shared.lua
                  • cammo_heavy/
                    • shared.lua
                  • cammo_ironuber/
                    • shared.lua
                  • cammo_lodge/
                    • shared.lua
                  • cammo_repulser/
                    • shared.lua
                  • cammo_sniper/
                    • shared.lua
            • custom_ammo_system_basic/
              • info.txt
              • lua/
                • weapons/
                  • cammo_mangnum/
                    • shared.lua
                  • cammo_pistol/
                    • shared.lua
                  • cammo_smg/
                    • shared.lua

• custom_ammo_system_core/
  • info.txt
  • lua/
    • autorun/
      • server/
        • sv_cammo.lua
    • weapons/
      • base_cammo_weapon/
        • cl_init.lua
        • init.lua
        • shared.lua
      • cammo_example/
        • shared.lua
• custom_ammo_system_powerful/
  • info.txt
  • lua/
    • weapons/
      • cammo_counter/
        • shared.lua
      • cammo_counteruber/
        • shared.lua
      • cammo_dopple/
        • shared.lua
      • cammo_heavy/
        • shared.lua
      • cammo_ironuber/
        • shared.lua
      • cammo_lodge/
        • shared.lua
      • cammo_repulser/
        • shared.lua
      • cammo_sniper/
        • shared.lua
• custom_ammo_system_basic/
  • info.txt
  • lua/
    • weapons/
      • cammo_mangnum/
        • shared.lua
      • cammo_pistol/
        • shared.lua
      • cammo_smg/
        • shared.lua

nikkimayall, mossesx, santa_leche