The Smith Enterprise-based MK14 was then used as a basis to eventually create the Mk 14 Mod 0 with Springfield Armory, Inc. created its own version of the M14 EBR (MK14 SEI), which used a medium heavy weight 457 mm (18.0') barrel and was more widely favored than the rifle made by Rock and Ribordy. In 2003, Ron Smith and Smith Enterprise, Inc. Army service in Afghanistan, September 2010 The M14 EBR-RI has a standard weight 22.0-inch (560 mm) barrel and lugged GI flash hider it is not to be confused with the Mk 14 Mod 0 or Mod 1. Army has assigned two M14 EBR-RI rifles per infantry platoon for units deploying to Afghanistan. These weapons are made for both the designated marksman and the close combat roles. It is a variant of the M14 battle rifle and was originally built for use with units of United States Special Operations Command, such as the United States Navy SEALs, Delta Force, and task specific Green Berets ODA teams/units. The Mk 14 Enhanced Battle Rifle ( EBR) is an American military selective fire battle rifle chambered for the 7.62×51mm NATO cartridge. Modified M14 iron sights, normally used with a magnifying scope Naval Surface Warfare Center Crane Division Mk 14 Enhanced Battle Rifle 'Rock Island', used by the U.S.