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gas block screw

  1. Problems with removal of AR556 Model#8529 gas block screw

    Gunsmithing
    Well, I've gotten my brand new AR556, and the free float hand guard it comes with is in my opinion entirely too short for the length of the gun/barrel. So, I purchased a STNGR 15" HWK to put on it. I was excited to start the project today, and everything was going fairly smooth. Got the factory...
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