Gjail V1.3

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
          • Gjail 1.3 <-- Addon folder!
            • e.g.
            • lua
            • maps
            • materials
            • models
            • etc

• Gjail 1.3/
  • data/
    • gjail/
      • ba_jail_mars.txt
  • gamemode/
    • gjail 1.3/
      • entities/
        • entities/
          • ent_knife/
            • cl_init.lua
            • init.lua
            • shared.lua
          • weapon_ent_flashbang/
            • cl_init.lua
            • init.lua
            • shared.lua
        • weapons/
          • css_knife/
            • shared.lua
          • fists/
            • shared.lua
          • scanner/
            • shared.lua
          • weapon_akc/
            • shared.lua
          • weapon_aug_rifle/
            • shared.lua
          • weapon_deaglec/
            • shared.lua
          • weapon_deagle_gun/
            • shared.lua
          • weapon_disguise/
            • shared.lua
          • weapon_drug_syringe/
            • shared.lua
          • weapon_duel_USPs/
            • shared.lua
          • weapon_famasc/
            • shared.lua
          • weapon_famas_rifle/
            • shared.lua
          • weapon_fist/
            • shared.lua
          • weapon_flashbang/
            • shared.lua
          • weapon_guard_gun/
            • shared.lua
          • weapon_hands/
            • shared.lua
          • weapon_knife/
            • shared.lua
          • weapon_m4a1_rifle/
            • shared.lua
          • weapon_m4c/
            • shared.lua
          • weapon_mc/
            • shared.lua
          • weapon_mp5c/
            • shared.lua
          • weapon_pickpocket/
            • shared.lua
          • weapon_prisoner_gun/
            • shared.lua
          • weapon_pumpshotgunc/
            • shared.lua
          • weapon_real_base/
            • shared.lua
          • weapon_real_base_pistol/
            • shared.lua
          • weapon_real_base_reddot/
            • cl_init.lua
            • shared.lua
          • weapon_real_base_rifle/
            • shared.lua
          • weapon_real_base_smg/
            • shared.lua
          • weapon_real_base_snip/
            • cl_init.lua
            • shared.lua
          • weapon_real_base_special_aim/
            • shared.lua
          • weapon_scoutc/
            • shared.lua
          • weapon_stmpc/
            • shared.lua
          • weapon_tranquilizer/
            • shared.lua
          • weapon_usp2c/
            • shared.lua
          • weapon_uspc/
            • shared.lua
      • gamemode/
        • cl_command.lua
        • cl_init.lua
        • init.lua
        • shared.lua
        • sv_admin.lua
        • sv_client.lua
        • sv_rounds.lua
        • sv_tables.lua
  • maps/
    • ba_jail_mars.bsp

Arash, lilkingballerz, baptistasebastian388, KnightBoiaugust, faustofagnani8, yuminawato, TRI PIX, YEPE503, Benker, 6VITAMIN9A, _nazir2, ismailakpunar31, moogelba7er $csgocases_com$, [CN]QBZ-95, estidavi44, 老徐之才, carlosjmarcanof, BEYEFENDİ, Inatz, Nikfire1805 [ITA], monkill_official, Dyszz, Pfiffcaffee, TheGameInvolver, [HN] S_H_1_R_M_4_N, matvejmuratov777, chochogame2007, KlizmerOriginal, danielabalice02, sachin246cr7, victorcastro479, lautarokpo2005, -ROCKSTAR raslou, Pezza, slayerz183, egetaha0897, KilluaOnFlex, MainstayMist, Ahmet, playza231, Erick_Maksimets, hexer54539, Capitaine, Vegemite, ✪ち匚尺丹ㄗㄗㄚ, KeyMaxDxt, Miki :D, david, kumiukko, Bogusław Łęcina +1980 others