If your using the edit i did then yes it uses kr bag. this is a ESX ONLY EDIT
How ever on mine i removed all the key controls and forgot to add them back when i sent it in.
this is the one with all the key controls added back in.


All credits for the bag system it self go to Krille and his bag script
https://forum.cfx.re/t/release-esx-kr-bag-inventory-a-bag-inventory-script-synced-with-the-server/