You won't be unemployeed, you will be unemployable.
Actually it totally depends on how it goes down. If you freak them out, they call the PD and you get arrested for a weapons charge and you lose all your guns and then you get convicted or plead and get parole then you have a record that can be searched by your next employer (actually done by a 3rd party that gives a go / no go report to avoid lawsuits) Makes it hard to get a job with an intelligent employer.
If you don't freak them out to the point the PD get involved, then you get to keep your guns and you don't get a record. In most places ex employers will only confirm that someone used to work for them. They will not give quality of work or reasons for termination references due to liability issues. You probably won't get unemployment, but your life is not ruined.
We had a case just like this and I worked very hard to get us to do option 2 because I did not want the guy with poor judgement to fixate on my company after we ruined his life. Unfortunately most supervisors and managers (here in CA) were so gun phobic that if I hadn't spent 3 days arguing with them I would have had a SWAT event in my plant with all the distress that brings with it. They just wanted to make the scary guy go away, it was hard to get them to see that the goal was to get him to go away and stay away!
make the choice that works for you, but don't think that the repercussions of a failure are going to be in proportion to the "crime" they most certainly will not be and you can't put the shit storm back in the bottle once it gets out.