A weapon firing sound is blank, it's an explosion in an enclosed space. As tempting as it could be to add different sounds, it'll just make it a too rich and saturated, and not as realistic.
Sorry but, this last update sucks. Why did you change the sounds? You had great ones, now it sounds worse then the old RHS. And the camos? They're cool, but the "sand" one just looks like a gold plated gun.