Shotgun Concept for course Art_II_2010

i made this concept of a sci fi shotgun during a gun modeling session at games academy with course Art_II_2010.

still i find the handle very clumsy as also some of the deco elements. i'm not that good at shading, so it was also a metal shading lesson for me.
anyway for some reason it has a flag in the background, which i stole from the net.