http://flicksided.com/wp-content/upload ... ullets.jpg
you might even concider adding some reflectivity to the surface gun and bullets are on, just to add more "depth" to the scene
other then that, its great, good job

edit: you could actually use more reflections on the gun too, try some different hdri. i think this one might give you better reflections, if you're missing light from above you can add blackbody light above http://www.openfootage.net/?p=144