Over the past several years, my PD has come across a few violations of the Mass "assault weapons" ban. Its usually when guns are turned in for an R/O or we come across them some other way by accident and they are obvious violations that can't be overlooked. One guy on my PD has made it a mission to track the outcome of the these cases. He says that there has not been one prosecution followed through. ALL of the cases have either been dismissed or NP'd. It appears that DAs believe that it is too confusing to prosecute or just don't care to jam people up with this law.