Installed but never fired. Lewis Machine and Tactical bolt carrier, Wilson Combat bolt, KAW one piece ring on bolt and Springco enhanced extractor kit installed in extractor. I leave out the extractor O-ring but I can install it, if that’s your preference. Has the standard firing pin retainer pin but I can install a KNS M16 solid retainer pin, if you prefer. $70 shipped. PayPal, Venmo or Yelle.