Quote Originally Posted by DirtyMechanic View Post
yeah i had maybe like 100 left on the M4A1 and then went hell ill do the famas now. then i prestiged which of course lost it all... but now im doing to do it all with the scar-h and see what happens.

In COD4 you had to get all the expert challenges for ALL the assault rifles before you got the gold AK. Completing the expert challenges for a single assault rifle just gets you the Fall camo, nothing special.