2013 AR Special Edition

Here it is! AR Special Edition is full of information on the .300 AAC Blackout, .223 Remington, 5.56mm and 5.56 NATO, .308 Winchester, 6.8 Special Purpose Cartirdge, 6.5 Grendel, .30 Remington AR, .50 Beowulf, Les Baer's .308, Twist rates and much, much more!