Maintain and Set Up Your AR-15 Whether you're a beginner who is new to the AR-15 or are an intermediate shooter, you'll find everything you need to know to keep your AR-15 operating smoothly in AR-15 Setup, Maintenance and Repair. Written by master gunsmith and best-selling AR-15 expert Patrick Sweeney, AR-15 Setup, Maintenance and Repair&160;&160;is your one-stop guide to repairing, maintaining and modifying America's favorite rifle.It's all here Hundreds of detailed photosStep-by-step maintenance & repairAccessories & modificationsTips, tools & techniquesAnd more If you need to disassemble and maintain your AR rifle, or you're ready to swap barrels or handguards, add optics, or customize its stock, AR-15 Setup, Maintenance and Repair tells you everything you need to know. From field-stripping to keeping an AR functioning at its peak no matter how harsh the environment, Sweeney gets under the hood with you to keep it running.