This is a very, very strange story.  Mr. Hammer has been a landlord for several decades.  Surely he knows there are many legal ways to settle disputes with tenants over rents without taking actions which jeopardize your own freedom.  I'm sure he knows that breaking into a rented property and personally "confiscating" a tenant's property is not one of them. 

He's worth tens of millions or dollars and any "back-rent" on the rented property where the rifles were stored is a pittance in comparison to his monthly cashflow.  

It's always both amazing and sad when "smart" people do stupid things.  If this article is accuate, Mr. Hammer has joined that club.