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Outerwild's buffer tube kit is manufactured to Mil-Spec dimensions. 

Buffer Tube Kit Includes:

  • Buffer Tube, 7075-T6 6 Position, Hard Coat Anodized
  • H1 Buffer—3.8 ounces
  • Castle Nut, Phosphate
  • End plate, Ambidextrous Loop, Phosphate
  • Buffer Spring, Standard Music Wire
  • 100% American Made