Mil-Spec Black .223 Rem Rifle Stock Buffer Tube Kit
.223 Rem.5.56 NATO Mil-Spec Receiver Extension Kit with Buffer Tube, Castle Nut, End Plate Sling Adaptor, Buffer and Recoil Spring. 
Just add your buttstock to complete your custom carbine build! Don't rely on inferior buffer tubes. 
Manufactured using impact extruded 7075 T6 aircraft aluminum with a Mil-Std 171 matte black exterior coating.  Proudly made in the U.S.A.
Kit includes:
    6 Position Buffer Tube. This tube is made to mil-spec dimensions and with mil-spec materials.
    Castle Nut
    End Plate
    Buffer
    Recoil Spring
Does not include a sling adapter end plate.