do you know of any gun modeling tutorials?
I don’t know of any tutorials but what I suggest you do is, find a side view of the gun you want to model, view it as a backround image, and then make a gun from that, like outlining it, then putting faces in. and then extruding.
http://67.15.36.49/team/Tutorials/polgun/gunmodel.asp
its made for 3ds but you can probably use it
Good luck