Wish I still had the original cardboard box. Seems ghetto but that is probably the best idea - security through obscurity.
Another benefit of having a cabinet framed in is I can add in a motion detector or a sensor to trigger if the cabinet door gets opened.
Awesome ideas, really appreciate everyone's time and effort to help me out here.
Sorry that I have nothing cool to protect. Someone is going to need to go through hell just to nab a new frontier lower and a Ruger 10/22.