He should also face FEDERAL charges on possession of the sawed off shotgun. and
possession of a firearm by a prohibited person. Let the feds
prosecute him and incarcerate him (instead of wasting state money). Of course,
federal prosecutions of gun crimes is shockingly rare, despite Congress whining
about the need for more gun laws.
Wait, aren't sawed-off shotguns illegal? Demanding more gun laws because
criminals will never obey any gun laws is like having yourself neutered because
you think your neighbors have too many kids.