"True barrels can be change but it could be a starting point and there are a lot of dumb criminals who even if they changed the barrel would keep it in a closet to be found in a search. Hey I was just thinking on this one of better solution that is all. Anyone got a better idea then the AWB?"

LT,

Some things sound good until you think them through.

The majority of gun crimes happen two ways. 1. Ned catches Betty bangin Fabio, Ned grabs a gun and kills them both in a jealous rage. No mystry about who did it and the gun was leagally purchased.
2. Lephonso uses a gun to whack rival gang member and take all his blow. The gun he used was stolen in a robbery 3 weeks earlier and purcahes by Lephonso behind the Dairy Freeze.

Either way you have dead bodies and it had nothing to do with any gun laws.