by Shooting Illustrated Staff posted on October 29, 2010 Guns Support NRA Shooting Illustrated DONATE DPMS Sportical In this article 5.56x45 mm, DPMS, semi-auto rifles Related Stories DPMS Panther 3G1 Gallery Benelli MR1 Gallery DPMS Panther Sportical DPMS Panther LR-204 Gallery DPMS Tac-2 Most Popular Tech Wisdom: .300 Ka-Boom Marines Ditch 100-Year-Old Marksmanship Standards Affordable Firepower: Five Budget-Friendly AR-15s Review: Springfield Armory 1911 TRP 4.25-inch CC Getting Serious: Stepping Up Your Marksmanship Skills Make It Work For You