The only problem I ran into is that the CIA Code 39 font just won't work no matter what I tried. So I downloaded a different bar-code font from DaFont and fixed the style file for that font on my computer. The only other problem I noticed is that there isn't support for split-weapons in your icons, like a pistol that's

/

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Tweaks I've made for $#@!$ and giggles:
I played with your accent images and added red, yellow, orange, green, and purple accents. Because of that I had to tweak some of the z layering. I was thinking of using the accent colors to help differentiate companies with a quick glance.
I also slaved the barcode to the model number field so that I only have to enter that data once.
I'm experimenting with other fonts for the flavor text field and seeing if I can't set up a filter for certain words.
I noticed that you have a word-list, but didn't do anything with it in the game- or stylesheet.