It had to happen.
We have groups of superheroes working as part of legitimate law enforcement or as vigilantes. We have groups of supervillians busy about their schemes for world domination... and so now we have a bunch operating as a private military company available for hire to, well, anyone who can pay their fee.
They are a fascinating bunch, these heroes-for-hire. There's plenty of background for the GM to take aboard and use to weave SixGun into the plot. Allies or enemies? That's up to you. You could even decide that they are your party of characters - they are well-developed enough to make fascinating pre-gens, and indeed the background suggests a campaign-full of plot ideas even as you read through it. Group dynamics, in particular, are detailed comprehensively and should prove entertaining in play.
There are several adventure ideas supplied, as well as complete individual backgrounds and character sheets for each member of the group as well as a comprehensive overview of the group itself and how it came to be. There are also some 'supporting cast' characters - a pilot, a cyber-doctor who runs their maintenance and even a potential client - each with their own plot hooks and tie-ins to SixGun themselves.
For those who like to lay it all out on the table there are paper 'standee' miniatures for all characters (and a neat stealth aircraft); and there's enough details about Private Miliary Companies to enable you to use them effectively in your game even if you haven't been tracking their rise in real life. Overall an excellent resource with loads of potential!
[5 of 5 Stars!]