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 Review: Smith & Wesson Bodyguard 2.0 The Return Of The Lever-Action Rifle Avoid It If You Can See Your Sights Classic Guns: USMC M40A1 Sniper Rifle Tech Wisdom: Ancient Ammo