That happened in, what, 2011?
Sure, he's got a prior for building a bomb. Sure he's got a prior for manufacturing his own NFA items. Just a run of the mill non-violent drug dealer. Gun owners are always good guys and the government is always evil.
They are when you're a felon. See his priors.
So why doesn't the police act like the master in the parable of the talents and hand it out to the good servants saying, "well done good and faithful servant..."