Olympic Arms Barrel AR-15 5.56mm NATO .920" Muzzle Diameter 1 in 9" Twist 20" Chrome Moly Matte

Product #: 121853 Olympic Arms #: ARB20-BULL
Ships 11/27/2015 from MidwayUSA
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  • Information

Barrels are constructed from chrome moly steel and feature a non-glare finish. Bull barrels do not have a front sight and will require a gas block (sold separately). Other barrels include a front sight/gas block assembly.

Technical Information


  • 20" Chrome Moly Barrel

  • Rifle Length Gas System
  • .936" Gas Block Diameter
  • Front Sight not included
  • .920" Crowned Muzzle
  • Button Rifled
  • 1 in 9" Right Hand Twist
  • Ready to Install
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