Skeeter, Dave, Guy, et al,
I don't want to rain on your parade, but I'll give you my experience as a warning.
I had a similar unit made by Homak which was broken into. The weak link on these is the bolt fixing the locking plate to the door. A sturdy screwdriver and some work to find the plate, then some hammer blows will probably shear the bolt off and the locking plate with it. This was done on mine, with dual locks. I lost 12 handguns (*whimper*) when the thief broke in.
What I'd suggest is that you mark the area(s) where the locking plate engages the cabinet frame, then, reinforce the cabinet walls to prevent them from being bent to allow attacking the lock plate. If yours is like mine, the door edge is formed as a squared "S" shape. Some wood expoxied behind the edge and tight fitting against the outer wall should prevent/reduce a prying attack. (if you need an illustration, PM me).
Until I had funds to purchase a safe, I stored the replacement guns in a Stack-on "PS-520 Strong box safe" bolted to the wall. These have thicker metal and a 6-7mm thick door. The do need to be bolted to something however.
See:
http://www.midwayusa.com/eproductpage.exe/showproduct?saleitemid=446022
These can be found or ordered through some local shops for around $100. They'll hold 6-8 handguns, depending on size and how tight you want to pack them in.
In fact, I have two PS-520's now, and use them to store the "loose" boxes of ammo.
(see attached)
