Close assault weapons are used in situations where you need to get close up and personal with the opposition. Ranges are short and combat can be fierce. Whilst the classical close assault involves fighting your way through a building or within an urban environment, many of the same principles can be applied to a running battle through a starship or space station.... with the added delights of micro-gravity and vacuum to contend with in many cases, a common trick being to turn off the artificial gravity when someone's trying to board your ship, and careless use of projectile weapons in a pressurised environment tends to lead to a loss of atmosphere.
These and other perils of space combat are discussed with appropriate rule mechanics to cover such as recoil in microgravity environments and some of the techniques used by experienced space fighters to maintain control of themselves and their weapons.
After a brief word on terminology regarding firearm types, a series of 'actual' (well, invented) weapons are presented. This is mostly flavour text (and some rather nice illustrations) to allow gunbunny characters to enthuse over their favourite weapons with as much detail as a contemporary gun enthusiast can with the real thing, or at least a gun magazine, in his hands. It's nice to be able to put some detail to the somewhat generic stats presented in the core rulebooks, and everything is described in 'realistic' terms - you might almost be reading a real gun catalogue.