For $13, I may have to get a couple even if they end up just organizing the safeI don't have any rigs 'cause I'm too old to operate but these are some pretty cool mag carriers...
http://ncstaroutlet.com/collections/shooters-gear-accessories/products/vism-magazine-ready-carrier
Holds 13 mags stacked horizontally. The window is a nice touch so you can put platform/caliber for quick id.
I was using a Plano double pistol case that Acadmey used to sell for $7 - $10 (can't recall the exact price) not sure if they still go for that, but I like the dividers in the one you postedInside view.
I need to order some more...
Free shipping for orders over $35....
I've got a lot of different kit I haul around for different classes I'm teaching. Gear is quite a bit different for a handgun class than for a Sniper/precision rifle class.
In general, I have a lot of different sizes of Pelican cases. Most are pre-loaded with gear for a specific class. I grab the ones I need, plus my toolbox and range box. Keeps everything waterproof and dustproof, as well as easy to move around. I've even driven through an automated car wash with them in the bed of the truck. No worries.