The gun casts shadow, which look weird withoud the shadow of the first person body. If you are not including the own characters body in the first person camera, you should remove the pistol shadow because the shadow flotates itself around the map.
Another thing it's that I can shoot the pistol until I have -1 ammo, I thing this is a bug where I can shoot 1 bullet more before reloading.
Also, when not aiming with right mouse button, the bullets do not seem to go to the crosshair.
For the rest of things, very nice game as a solo project, really good work and nice 3D models.