What's the book about? Why did you like it?
The main story revolves around a man who takes an interest in firearms at a young age, grows up using them, becomes a dealer in FA arms (as a hobby, not his main source of income) and then becomes one of the targets of an ATF operation designed to squash several of the largest dealers of FA guns in the U.S.
It's a great book, mostly because of how the main character, his relatives & friends are involved in interesting moments of real history. They're not always directly involved, but it talks about how such things as Waco and Ruby Ridge played out, and the effects that these incidents, along with the 1968 GCA and other things, had on the central characters, and how they affected future events...hence the "Unintended Consequences".
It's a lengthy book, but covers a lot of history, and is a great read. I first bought a copy, and read it 2 or 3 times, then loaned it to a friend. Unfortunately, I forgot who I loaned it to (having loaned multiple books to multiple friends), and no one has ever found it, or admitted to having it. In any case, the book suddenly became difficult to find, having apparently gone out of print...and when you could find one, they were asking $75 to $100 for it. I finally located a kinda beat-up copy at a gun show, the guy was asking $5 (it wasn't THAT beat-up), and I figured it was good enough, and could become a good loaner, assuming I ever found another copy. Eventually, I did locate a guy on a local forum who had a copy he'd read, once, and wanted $25 for. I snatched it up, and after I paid him he said he'd had another dozen or so offers to buy it, after mine. He asked what was so special about it, and after I'd told him...he seemed a tad disappointed that he'd let it go so "cheap".
Tim