For around $200 this is a very decent locking gun closet. It is not really a "safe" because with some proper tools, some elbow grease and a bit of time I could break in to this. That said, I did not want to spend many hundreds of dollars (or thousands) on a boba fide "safe". I live in rural Nebraska, and this is mounted to the wall in an out of the way place in my house, and it effectively keeps the guns away from grandkids' hands. If I lived in a city or any kind of suburban neighborhood, I would have considered buying a real safe.
The only issue I had with assembly was that there are little shelf holder slots to slide the shelves into so they stay put. They are attached to the metal sides with some kind of adhesive. A couple of them partially came un-adhered and I drilled out a little hole and used some pop rivets to affix them. Please see the attached pics.
Overall, it is doing exactly what I need it to do.