Thread on Ruger AC-556 MG

Discussion in 'Auto & Semi-Auto Discussion' started by gkemper, Sep 18, 2010.

  1. gkemper

    gkemper New Member

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    Hello,

    Just wondering if anyone knew what the thread size on the barrel of a Ruger AC-556 machine gun was. Are they right or left hand?

    I assume that they are the same on both the 13" and 18" barrels?

    Thanks