"The best modern sci-fi since Wool by Hugh Howey." - (Abbey Reads) The future is governed through a genetic hierarchy - superhumans at the top, humans and defects at the bottom. Welcome to an all-new military science fiction novel from critically-acclaimed author Shami Stovall. Clevon Demarco, a genetically modified human, has a cocksure attitude and the combat skills to back it up. With his unparalleled skills, he makes his living as a ruthless gunrunner on a shady space station...
Old Man's War by John Scalzi
Revelation Space by Alastair Reynolds
Robert A. Heinlein.