The gunpowder_weapons_pack1.zip file you have requested: Shadow of Chernobyl / Skins / Weapons / GunPowder Weapons Pack - 4.65mb 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:
Don't be fooled by the name; this mod doesn't add weapons to the game, but rather, changes their look. Applying this mod to your game will give weapons a darker and sleeker look. Check out the screenshots.