by Shooting Illustrated Staff posted on February 28, 2011 Guns Support NRA Shooting Illustrated DONATE Barrett REC7 in 5.56 NATO In this article AR, AR-15, Barrett, Magpul, semi-auto rifles Related Stories Barrett REC7 in 5.56 NATO Barrett REC7 Chambered in 5.56 NATO Gallery The Truth About Pistons Yankee Hill Machine Desert Enforcer Colt Match Target M4 Gallery Most Popular So What’s Next? Jim Cirillo’s 1-2-3-6 Drill Be More Than A Bodyguard Which Shotgun Safety Is Best? Grocery Stores Lining up for Ammo Vending Machines Review: Smith & Wesson Model 1854 Rifle