The sunset of this bill could have unintended consequences.
For example, lets' say a bunch of pro gun experts get together and testify to congress that post ban configured rifles and pre ban configured rifles are exactly the same rifle with the exception of the bayonet lug and flash hider. Or that there is no difference between imported assault rifles and those made with a handfull of US made parts. Or that the AW ban had no impact whatsoever on crime. Or that the size of the magazine in a weapon is immaterial to it's lethalness.
The congress, spurred on by the anti gun nuts, the media, hollywood a$$holes and such could say one of a number of things>
>First, that since banned guns and non banned guns are essentually the same, then the AW ban bill didn't go far enough and all like AW should be banned.
>Or, since there is no real difference in the pre and post guns then we should keep the law as it is and you should quit whinning about it.
>Or, whether crime went down because of the ban or not is immaterial, you congressmen don't want the blood of the children on your hands should someone go back into a school and shoot up the place with one of these evil rifles. Furthermore you should do more to limit these rifles getting into the wrong hands.
>Or, Since the reduction of magazine feeding devices, attacks on school children have decreased thus showing that is was the right thing to do. Or, the proliferation of high capacity magazines which were produced before the ban keeps the AWB from working, therefore we need to ban all existing magazines and feeding devices that have a capacity over 10 rounds.
>Or, we must guard against domestic terroism and to ensure safety, all citizens should turn in thier firearms to the government for safe keeping.