I am looking for a book and possibly a series about a cop named Horn (late 80s or early 90s was when I bought the paperback.) He gets attacked and his family killed. The police force give him really shoddy cyborg replacement parts. He uses the insurance money from his family's death to buy black market upgrades and resigns to hunt down the assassin (who is also a cyborg.) This leads him off planet to some sort of space station as a security office/policeman I had thought the book was named Horn, but Amazon searches led nowhere. I can't remember the author. Any tidbits would help me try to track it down.