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Rosco Manufacturing AR-15 K9 5.56 NATO 11.5″ Barrel – Black
Rosco Manufacturing K9Barrel556NATO11.5″Patrol Length Gas SystemFits AR-15Melonite FinishBlackIncludes Patrol Length Gas Tube PTFeatures:11.5, Patrol Length Gas System1/2×28 Muzzle Threading1/7 Twist416R ConstructionNitride FinishIncludes Patrol Length Gas Tube