hellsing_casull.zip

This download looks like an addon. You need to extract the downloaded zip and put the addon folder in your Garry's Mod addons folder. You should end up with a directory structure similar to below:

• steamapps
  • common
    • garrysmod
      • garrysmod
        • addons
          • Hellsing Casull <-- Addon folder!
            • e.g.
            • lua
            • maps
            • materials
            • models
            • etc

• Hellsing Casull/
  • info.txt
  • lua/
    • entities/
      • casull_bullet/
        • cl_init.lua
        • init.lua
        • shared.lua
    • weapons/
      • weapon_casull/
        • shared.lua
  • materials/
    • models/
      • Weapons/
        • V_models/
          • Fancypants.casull/
            • Frame.vmt
            • frame.vtf
            • frameref.vtf
            • slide.vmt
            • Slide.vtf
            • slideref.vtf
            • sliderref.vmt
  • models/
    • weapons/
      • v_pist_casull.dx80.vtx
      • v_pist_casull.dx90.vtx
      • v_pist_casull.mdl
      • v_pist_casull.sw.vtx
      • v_pist_casull.vvd
      • w_pist_casull.dx80.vtx
      • w_pist_casull.dx90.vtx
      • w_pist_casull.mdl
      • w_pist_casull.phy
      • w_pist_casull.sw.vtx
      • w_pist_casull.vvd
      • w_pist_casull.xbox.vtx
  • sound/
    • weapons/
      • casull/
        • deagle-10.wav
        • magin1.wav
        • Magout1.wav
        • sliderelease1.wav

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