The stalker_cop_real_weapon_names_eng.zip file you have requested: Call of Pripyat / Mods / Real Weapon Names Call of Pripyat (ENG) - 94.32kb is not available. Perhaps try browsing all files for the game S.T.A.L.K.E.R.: Call of Pripyat and upload any files you want to share or are missing. This is the only information we could locate:
This is a simple mod, one which I looked for but couldn't find, so I made it myself. Using the officially English-translated text files from 18.104.22.168 as a base, I changed all of the weapons' inventory names and descriptions to their real designations, and also made the same changes to all of the references to specific weapons I could find in the NPC dialogue and loading screen tips.