Changing Sound Of Dual Scorpion To PP-19 MOD

Hey im trying to do this (as u see in the title) but i can not find the sound file for dual scorpion, only the scorpion, umm i tried changing scorpion sound but it did not affect my sound for dual scorpion, any help?

I've quited .REZ modding but I think I could help you with it.

Go to Combat Arms folder then click on the folder "Game". Now, extract a file called "GUNS_SND_SMG". After you exract, just switch the .WAV files between the two guns. After that inject them and replace the file you extracted.

Simple, isn't it?