Maybe its just my personal preference, but I think the Assault Gun Sound Effect is a bit 'scream-ish' & squeaky & over long term, annoying / irritating ! There are lots of really cool sounding Gatling / mini gun sound effects online, some available with free license. Or just Attribution license !
And as the wz Assault Gun looks like a 'Mini-Gun' maybe it should sound more like that ;
https://www.youtube.com/watch?v=YqMoFrCinTY (this one is a bit more futuristic, would suit cyborgs!)
https://www.youtube.com/watch?v=eA1QtgFGrYA (this one maybe suit tanks & turrets etc...)
https://www.youtube.com/watch?v=8RbL4PwTDsQ
Also check out this website for various others !
http://soundbible.com/tags-gatling-gun.html
***** is there a way i can manually change the assault gun sound myself, if i use this .wav file ;
http://soundbible.com/1920-Minigun.html ??