The Competitive AR15: Builders Guide is the third book in a series by Glen Zediker that has set a new standard for technical information. The Competitive AR15: Builders Guide provides step-by-step details on how to assemble an AR15 rifle or carbine, from start to the finish. Whether you've got a parts kit or want to modify or refurbish a gun, it's all here! Everything you need to have and need to know, all shown clearly. There are hundreds of large, clear photos, and all necessary details. Contents include list of necessary tools, disassembly and assembly, lower receiver build, upper receiver build, barrel installation (standard configuration), bolt / bolt carrier (plus modifications and tuning), free-float tube (selection and installation), trigger installation (including competition two-stage triggers), and A2 rear sight (including front sight, and competiton sight modifications.) This book gives you nearly 800 photos over the 272 pages.