Book excerpt: If you want to build your own AR-15 style rifle, this is the book you need. The AR-15 Rifle Builder's Manual is the fully illustrated step-by-step guide to building the AR-15 style rifle. No procedure is left out or glossed over. The primary AR-15 groups (upper receiver assembly, lower receiver assembly, and bolt carrier group) are broken down into their component assemblies to provide every detail in the AR-15 assembly process. This book is not only the authoritative guide to building an AR-15 rifle, it is an invaluable resource for anyone looking to upgrade or modify their existing AR. Key concepts such as headspacing, trigger function, troubleshooting, and cycle of operation are also covered.TOPICS INCLUDE:* Lower receiver group components, tools, and assembly* How an AR trigger works* Headspacing an AR-15* Bolt carrier group assembly* Upper receiver group components, tools, and assembly* Function check procedures* Basic AR-15 operation* Service and lubrication* TroubleshootingYou won't find a more detailed AR-15 assembly manual anywhere. Designed specifically for e-reader platforms, this manual offers reader-friendly navigation between the Table of Contents and all subsections. Take it to your workbench or the range.