Kill Quick or Die is a men's adventure novel akin to James Bond or Jason Bourne. The main character, Bucher, "The Butcher," is an absolutely ludicrous character. He is an ex-mafia enforcer kingpin who leaves the life of crime to be then recruited by a top-secret government cabal. He is also allowed to play by his own rules, as no authority can contain him. He is allowed to kill without consequence because he is too valuable, and, dammit, he is just too good at what he does. The author builds up an enemy as the fastest draws the mafia's got, but Bucher draws on him before the mobster twitches an eyelash. The author will create a seven-and-a-half-foot behemoth but he won't lay a meaty finger on Bucher as he is pummeled to disfigurement. He's handsome and intelligent, has Spidey sense, and even has a third leg *wink*. He has no weaknesses and never once has to come back from a losing fight; he wins from the get-go. Well, he has one weakness: other people, and maybe caring about them, but just a little bit, in a manly, macho way.
The violence hits hard. The brutality is described in grotesque detail. The racism, too, well, there is a lot. It was written in the 1970s and when Bucher goes to Cairo, wow. Bucher isn't a good guy; he is, at best, an antihero, but even then, it is hard to see how this was acceptable.
It was interesting to read this as a time capsule. The descriptions were fun, and it was a weird ride of a book. It is a pulp book and not an impressive one. Read it or don't read it. Just don't expect much from it.