The pripyat_realistic_weapons.zip file you have requested: Call of Pripyat / Mods / Pripyat realistic weapons - 131.79kb 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:
Stalker Pripyat realistic weapons addon (complete compatible). This is pretty basic, effects bullet characteristics, weapon damage, and weapon firing characteristics. Also, upgrading weapons will make them crazy strong, so, do this only if you want to. This should work with any mod, it is very basic, however i cannot say anything for mods that change models or add weapons.