by Shooting Illustrated Staff posted on March 2, 2011 Guns Support NRA Shooting Illustrated DONATE ShootingIllustrated.com also did an in-depth review of the AR. In this article .223 Rem., AR, AR-15, Colt, Colt Match Target M4, semi-auto rifles Related Stories Mossberg MMR Turnbull Introduces TAR-15 Semi-Automatic Rifle Barrett REC7 in 5.56 NATO MGI Hydra Marck-15 Modular Rifle Gallery Colt Match Target M4 Most Popular Ditch the “Carry Rotation” Learn About Body Armor Up Close The Long And Short Of It The Precise Trigger Press 10mm vs. .40 S&W: Similarities, Differences and Uses