I'd like to know, too

引用自 the milkman：

For whatever reason, the Emplacement gun is completely silent.
Is there any way to fix this?

Temporary fix is removing the game_sounds_weapons.txt' file from mod's script folder. But to do that you need to unpack the mod's .vpk file first using GFCscape.
...
Or just subscribe to this wait until the OG author fixes it in more elegant manner so you could go back to the original mod.
https://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=3367861622

I suggest switching over to vpkedit, the gfcscape is deprecated and isn't maintained anymore, unlike vpkedit

引用自 punching bag：

I suggest switching over to vpkedit, the gfcscape is deprecated and isn't maintained anymore, unlike vpkedit

I agree with you Mr Boykisser Sir