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 Mossberg MMR Gallery The Truth About Pistons Yankee Hill Machine Desert Enforcer Most Popular 2023 SHOT Show Roundup: New Guns Editor’s Picks: SHOT Show 2023, Day Four Editor’s Picks: SHOT Show 2023, Day Three 2023 SHOT Show Roundup: New Optics From Holosun Editor’s Picks: SHOT Show 2023 Day Two Walther WMP Review