Here 3 different sounds hit, headshot, kill
Hit
Headshot
Headshot-alternative version added revebration
Kill

Requirements:
Hitsound

Recommend this surround virtualizations tool HeSuvi

Installation:
unzip .7z file and place the folder in "….\SteamApps\common\PAYDAY 2\assets\mod_overrides"

For hitsound i added sound multiplier slider in game!

Download(google drive)