The Master of the AR-15 Has Done It Again!The AR-15 has become America's favorite rifle-and no one knows it better than Patrick Sweeny. Now, in Volume 3 of his best-selling series on the AR, Sweeney unlocks the mysteries behind the piston AR. From factory-stock rifles to do-it-yourself conversions, if there's anything you want to know about the latest generation of the AR-15s, you'll find it in "Gun Digest®s and novel inventions bringing new meaning to the term "speed shooting."
