The pak34_zax_compression_rifle_sound_upgrade_.zip file you have requested: Mods / Zack's Rifle sound mod - 448.87kb is not available. Perhaps try browsing all files for the game Star Trek: Elite Force II and upload any files you want to share or are missing. This is the only information we could locate:
This mod changes the compression rifle and enhanced compression rifle sounds. Personnaly I like the original sounds better, but that's just my opinion. I suggest a download to test it.