From publisher blurb:
Too much money? No problem!
Guns and other stuff delivers just what the title claims! An expanded range of Armoury items for use in your Big Damn Sci-Fi games. Not just weapons and armour but a wide range of items. More than the Armoury items themselves, Guns & Other Stuff adds Modalities for custom styles of technology to suit any Species along with Upgrades to make that special item truly unique. And for those loath to spend Experience Points on gear, this Core Companion further contributes currency to Big Damn Sci-Fi games. So, what are you waiting for? Unburden yourself of that useless money and get some guns and other stuff.
In summary, Guns & Other Stuff includes:
Rules for money and currency.
Codified & expanded list of Armoury items.
Rules for customizing Armoury items on both a Species and character level.