INSTALLATION: Place the .awc file to "mods/update/x64/dlcpacks/mpsum2/dlc.rpf/x64/audio/sfx/dlc_mpsum2"

To have these sounds for the Carbine Rifle, just head to your "weapons.meta", it's in "mods/update/update.rpf/common/data/ai"

Right-click on it and search the word "carbinerifle" and press the down arrow button three times, and replace the normal "AUDIO_ITEM_CARBINERIFLE" with "AUDIO_ITEM_SERVICE_CARBINE" without the quotations of course.

After that, save and load in, if it works, congrats!
If not, comment on the mod page your problem and I'll see what the problem is.

Anyways, hope you enjoy this mod! -EcLiPsE-