AR Buffer Tubes

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  • Silverlode

    Ultimate Member
    Aug 16, 2010
    4,797
    Frederick
    Mulit-part question but should be easy for anyone in the know.

    What is the difference in size between the mil-spec and civilian?

    What size does the Colt LE6920 have?

    What size does the Colt AR6721 (HBAR) have?

    Are castle nuts one size fits all for these or specific to one or the other?

    Thanks
     

    quad

    Another Hooligan
    Mar 31, 2011
    890
    Allegany County
    Slight difference in diameter of the tube. Colt would probably use the milspec tube. Maybe someone with a colt can confirm. *edit*....I was thinking they used the same nut, but looking at the bottom pic would make me think otherwise.

    milvscombuttstock.jpg
     

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