http://soldner.jowood.com/images/weapons/M4.jpg
Not always. Also, the M4 in Counter-Strike doesn't have a 'nade launcher. The up and down views are a bit crappy aswell. You need to have front and top view instead of just top :P Noticed how buildings are done? Notice how you can see a cliff and on top of it aswell? Should be the same for any graphic.
Loving your sig, Geonosis_Phoenix ;D