Last I heard, they were whining because we'd found the loophole permitting pre-ban mags (+10 rounds) to be imported (which they didn't think to ban, and over which BATF technically has no authority).
I have to ask this because I consider myself a gun enthusiast who doesn't have any (yet). I know Eugene Stoner designed a sharp-shooting rifle called the SR-25 that looks (at least to the unknowledgable) very much like the M-16. Is the SR-25 covered by the current ban?