The classic, ever essential guide to the AR-15! Author and gunsmith Patrick Sweeney takes an inside look 5 in this first book i04 n the series that is still a must-read on the AR-15, one of the most versatile rifles in the world. The Gun Digest Book of the AR-15 tackles ARs for military and police operations to long-range target competitions. AR-15 reviews of popular models AR-15 stocks and accessories Ammo choices for your AR Custom ARs and aftermarket parts AR-15 optics and mags In Gun Digest Book of the AR-15 learn everything you need to know about the AR-15 operating system and how to upgrade, maintain and customize yours. If there is something you want to know about the AR-15, you will find it here.