Factory Error – Parts Only – Aluminum Linemount Retro XM177 Buttstock | Fits AR15


  • Factory Error – Sold For Parts Only!
  • These will mount onto a mil-spec buffer tube but the locking pin is set incorrectly so it does not lock properly and it does not collapse properly when the release lever is pulled.
  • This is completely assembled but is sold only for parts!
  • Retro XM177 Buttstock
  • Tough aluminum construction like the originals
  • Black finish
  • Fits Mil-Spec carbine buffer tubes
  • Made in Taiwan

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