page_title: United States Army Squad Designated Marksman Rifle
hierarchical_section_title: United States Army Squad Designated Marksman Rifle
caption_attribution_description: Soldiers from 3rd Infantry Division provide perimeter security for Iraqi policemen at a traffic control point in Tikrit, Iraq.
context_page_description: The United States Army Squad Designated Marksman Rifle is a heavily modified M16-series rifle intended to provide increased accuracy at longer ranges, giving infantry squads greater firepower.
context_section_description: The United States Army Squad Designated Marksman Rifle (SDM-R) is a heavily modified M16-series rifle intended to provide increased accuracy at longer ranges, giving infantry squads greater firepower.
caption: Soldiers from the 3rd Infantry Division with SDM rifles.
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