by David Crane david@defensereview.com DPMS Panther Arms is currently making a civilian-legal replica of the semi-auto-only 5.56mm (5.56x45mm) U.S. Army Squad Designated Marksman Rifle (SDM-R), which is designed to allow squads to engage enemy targets at ranges of 600 meters (600m). According to the 2005 U.S. Army Field Manual, "The primary mission of the SDM

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