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WYSSEN DEFENCE AR Stock adapter for the SIG 550 series of rifles. We got 2 options in stock, one with and one without the internals for the adapter.



  • Milspec 6 position buffer tube
  • aluminum tube
  • black
  • fits Swiss 550, 551, 552, 553 rifles
  • does not fit aluminum lower
  • does not come with locking mechanism/ parts

SIG 55x AR Stock Adapter (Wyssen Defense)

SKU: 3118
Out of Stock
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