The NEW AR-15 Complete Owner's Guide - How to select, configure, operate, maintain and upgrade your own AR-15 by Walt Kuleck with Greg King. WHY A “NEW“ AR-15 COMPLETE OWNER’S GUIDE? In the years following the first publication of The AR-15 Complete Owner’s Guide the universe of the AR-15 has changed dramatically, by both evolution and revolution. THE PURPOSE OF THE BOOK While we’ve brought the content of The New AR-15 Complete Owner’s Guide into the 21st century, the purpose we set out for the original Guide is largely unchanged: to build a foundation for understanding, evaluating and selecting AR-15 rifles, components and accessories. It’s for everyone interested in this, the most versatile rifle system ever developed, whether contemplating one’s first AR-15 or one’s tenth. Because of the AR-15 rifle system’s versatility, we’ll be defining four general areas of AR-15 applications: Defensive Rifle, Hunting Rifle, Competition Rifle, and “Just Plain Fun”!