Could have fooled us buddy but the pictures and the wireframe you are showing are NOT from 1 and the same gun.

Although you will try and convince us, -what would be (very) hard- the only way to do so is to show ur wireframe on the shaded version of that gun, try positioning them in a similar way as the pictures huh.
Also, show the maps on the mesh, and the textures you made in Photoshop.

That would be a start.

M.