{"product_id":"tandemkross-krossfire-bolt-for-ruger-mark-iv-22-45-22-lr-black","title":"TandemKross Krossfire Bolt for Ruger Mark IV \u0026 22\/45 .22 LR - Black","description":"\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eThe \u003cstrong\u003e\u003cspan style=\"background-color: #ffff00;\"\u003eTandemKross Krossfire Bolt\u003c\/span\u003e\u003c\/strong\u003e is a precision drop-in replacement bolt assembly engineered for the \u003cstrong\u003eRuger Mark IV\u003c\/strong\u003e and \u003cstrong\u003eMark IV 22\/45\u003c\/strong\u003e pistols chambered in \u003cstrong\u003e\u003cspan style=\"background-color: #ffff00;\"\u003e.22 LR\u003c\/span\u003e\u003c\/strong\u003e. CNC machined from hardened steel, the bolt body is finished in a wear- and corrosion-resistant \u003cstrong\u003eblack DLC (Diamond-Like Coating)\u003c\/strong\u003e that reduces friction, minimizes wear, and extends service life under high round counts.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eThis complete bolt ships fully assembled with TandemKross performance internals already installed and retained, including the \u003cstrong\u003eTandemKross firing pin\u003c\/strong\u003e, \u003cstrong\u003eextractor\u003c\/strong\u003e, and \u003cstrong\u003eguide rod\u003c\/strong\u003e. The bolt also features an integral \u003cstrong\u003eHalo charging ring\u003c\/strong\u003e that gives the slide a larger, easier-to-grab charging surface for faster and more reliable manipulations.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eDrop it into your Ruger Mark IV or 22\/45 pistol and you're ready to run - no fitting or extra parts required.\u003c\/span\u003e\u003c\/p\u003e","brand":"TandemKross","offers":[{"title":"Default Title","offer_id":55084033212738,"sku":"198996","price":187.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0997\/7921\/5682\/files\/hires_11cba3a1-0b9e-4c75-a200-250f80aad1dd.png?v=1784768601","url":"https:\/\/centerfiresystems.com\/products\/tandemkross-krossfire-bolt-for-ruger-mark-iv-22-45-22-lr-black","provider":"Centerfire Systems","version":"1.0","type":"link"}