The New_Gun_Sounds.zip file you have requested: Audio / New Gun Sounds - 665.99kb is not available. Perhaps try browsing all files for the game Silent Hunter IV: Wolves of the Pacific and upload any files you want to share or are missing. This is the only information we could locate:
Just a couple of sound files to replace the default sounds for deck gun and AA gun in Silent Hunter 4 that sound more like they are powerful. More "bang" and less "click" on the AA guns. Installation description included... All very simple. Silent hunter 4: New sounds for deck gun and AA gun.