The cop_mod_1.03.zip file you have requested: Call of Pripyat / Mods / Scope Replacement & Other Shenanigans - 7.74mb 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 mod makes many changes to the weapons and even adds in new weapons to the game. There are a lot of changes, see the readme for full details!