Making a gun in zbrush.
So i had some sub compact gun ideas but im not sure how i would get those ideas implemented on zbrush. I imagine zspheres are the way to start up but later on in the sculpt (if i manage to get that far) how would i apply minor add-on features to the weapon. like bolts or the end of the barrel sticking out?
Also i haven't seen any tutorials on making guns, whats up with that?