ARs are Expensive! Protect Your Investment—with Gunsmithing: The AR-15 Whether you're a professional gunsmith or just an interested amateur, you'll find everything you need to know about keeping your AR perking in Gunsmithing: The AR-15. Written by master gunsmith and noted AR-15 expert Patrick Sweeney, Gunsmithing: The AR-15 is your one-stop guide to repairing, maintaining and modifying America's favorite rifle. It's all here! Hundreds of detailed photos Maintenance Repair Accessories and Modifications Tips, Tools and Techniques And more! Whether you're interested in simple tasks such as disassembling and maintaining your AR, or if you're ready to tackle more complex projects such as rebarreling or converting your AR to a piston design, Gunsmithing: The AR-15 tells you everything you need to know. Protect your investment and avoid costly mistakes—with Gunsmithing: The AR-15!