Mil-Spec Buffer Tube, castle nut -
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Mil-Spec Buffer Tube
7075 T6 aluminum.
Hardcoat anodized, matte black.
7¼" (18.4cm) O.A.L, 1.148" (2.9cm) O.D.
You won't find a better price on a quality tube. May be a tight fit in some Billet lowers. We recommend using a dab of Anti-seize or a drop of oil on the threads during assembly.