Which will only increase the time they serve when convicted for their criminal activity, especially if they display their weapon during the commission of their crime.  An armed intruder pretty much establishes that a reasonable person would fear for their safety from that intruder and eliminates the suggestion that the intruder was shot in violation of the law by the property owner.  Sorry Richard, I don't see a downside here.  Burglars should have one of the highest mortality rates in our society IMNTBHO.