{"product_id":"surefire-institute-ar-15-complete-m4-lower-receiver","title":"SUREFIRE INSTITUTE AR-15 COMPLETE M\/4 LOWER RECEIVER","description":"\u003cp\u003eCombined with a patent pending fire control system, the proprietary lightweight polymer construction of the SFI-15 lower receiver provides a superior strength-to-weight ratio.\u003c\/p\u003e\n\n\n\n\u003cp\u003eThe SFI-15 uses the following metal parts:\u003c\/p\u003e\n\n\n\n\u003cul\u003e\n\n\u003cli\u003eTakedown pin detents and springs\u003c\/li\u003e\n\n\u003cli\u003eHammer\/Trigger pins and springs\u003c\/li\u003e\n\n\u003cli\u003eBolt catch, spring, \u0026amp; roll pin\u003c\/li\u003e\n\n\u003cli\u003eMagazine catch spring\u003c\/li\u003e\n\n\u003cli\u003ePistol grip screw\u003c\/li\u003e\n\n\u003cli\u003eBuffer, buffer spring\u003c\/li\u003e\n\n\u003cli\u003eBuffer detent and spring\u003c\/li\u003e\n\n\u003cli\u003eCastle nut\u003c\/li\u003e\n\n\u003cli\u003eReceiver end plate\u003c\/li\u003e\n\n\u003c\/ul\u003e\n\n\n\n\u003cp\u003eAll other parts are constructed using polymer\u003c\/p\u003e","brand":"Centerfire Systems","offers":[{"title":"Default Title","offer_id":52668776186178,"sku":"REC0602","price":139.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0997\/7921\/5682\/files\/getimage__42677.1697572327.1280.1280.jpg?v=1774274450","url":"https:\/\/centerfiresystems.com\/products\/surefire-institute-ar-15-complete-m4-lower-receiver","provider":"Centerfire Systems","version":"1.0","type":"link"}