Yes, w00t, free rules!
The second edition of KR 16 is done and available to download from the website. (for free!)
It has more pretty pictures than before, more rules and less typos! (hopefully)
It also has guidelines for running campaigns and a points value system so you can design your troops and what not, if that is your thing.
Whilst aimed at 6mm games, simply change cm to inches at it will work for bigger 'scale' games too.
6mm sci-fi skirmish has never been so cool, or free!