How to replace Combat PDW Sound with a UMP45 Sound? How to rename SMG Mk II?

[MaxmanTV31]

Can somebody help me with this? I wanted to have full ump 45 in game - options:
Option 1 - Rename SMG Mk II
Option 2 - Rename PDW and Replace the sound with UMP45 sound (best from CSGO)
Can somebody help me i will be very happy cause i want to have a real gta 5 guns and everithing

Thank you