The jamms_weapon_sound_pack.zip file you have requested: Shadow of Chernobyl / Mods / Sound and Music / Jamm's Weapon Sound Pack - 3.05mb is not available. Perhaps try browsing all files for the game S.T.A.L.K.E.R. Shadow of Chernobyl and upload any files you want to share or are missing. This is the only information we could locate:
A sound pack updating most of the weapon fire and reload sounds found in the STALKER: SoC game. The aim of this particular pack is to provide more realistic (and higher quality) weapon sounds while still being consistent within the rest of the game's ambiance.