The vulcano_minigun_mod.zip file you have requested: Shadow of Chernobyl / Mods / Weapons / Vulcano Mod - 349.5kb 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:
This mod allows you to purchase the Vulcano mini-gun in Cordon. The weapon use the shotgun ammo and you need the exoskeleton to carry the weapon.