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Showing results for tags 'sig556'.

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  1. Sig USA 556 full auto kit -barrel with receiver demil 10" -gas tube, op rod, gas valve -sig quad rail -receiver pic rail and buis -full auto lower S,F,3,A 4 pos -collapsing sig triangle stock -grip -full auto bolt and carrier and ch Sig 556 misc
  2. StormWerkz threaded plug for .22 AR's, Sig556 pistols, SB brace adapters, etc. Lets you add the StormWerkz folding mechanisms to any receiver with 1-3/16-16 threads. NOT for standard AR-15's rifles. $28 For more information please go to AR Thread Receiver Block