This is a set of rules written by a customer of mine, specifically for 6mm miniatures. The rules are currently in beta, so they are unfinished, but army lists are being added often and I know the author would love hearing feedback and is actively working on more lists. The link below is to download the pdf file containing the rules and lists.
For any comments or feedback on the rules, please go to my sub-forum on the Tactical Command forums. The link is posted below: