Apbhq, do you want to learn to add the custom sound by yourself?
Yes i do if there is a tutorial for custom fire draw and reload sound i would like to see it
edit: i have searched a little bit and i guess it's not that easy to change the sound with amxx , in fact the problem is that the author of the model m4 knight he hasn't provided any shoot sound inside the model if someone knows how to add it this will solve the issue , then the only thing that is we need to do is to precache the fire sound