There are few things that characters (and their players) like more than going weapons-shopping, and this supplement caters for both of them.
Rather neatly, the product is divided into 2 parts. The first is the 'in game' catalogue that describes the items as if they were real, you can just imagine an eager gunstore clerk enthusing about the benefits of this hand blaster, or why that heavy ray gun is best suited to your needs.
The second section contains all the game statistics and other information that you'll need for each weapon that is introduced into your game. This is more than mere numbers, there are notes on how to use each weapon to best effect and on problems that can arise during use.
The 'in game' effect is highlighted by touches such as a company web address and e-mail on Mars... and I suppose the only thing missing is a few illustrations. Cull them from SF movies or the like if you feel the need.