{"product_id":"ar-15-m4-223556-unassembled-basic-rifle-build-kit-with-16-barrel-bolt-carrier-lpk-kit0034","title":"AR-15 M4 .223\/5.56 Unassembled Basic Rifle Build Kit With 16 Barrel, Bolt Carrier \u0026 LPK","description":"\u003ch1\u003eAR-15 M4 .223\/5.56 Unassembled Basic Rifle Build Kit With 16 Barrel, Bolt Carrier \u0026amp; LPK\u003c\/h1\u003e\n\u003ch3\u003e\u003cspan style=\"font-size: 14pt;\"\u003eSpecifications\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 14pt;\"\u003eUpper receiver (USA made)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 14pt;\"\u003e.223\/5.56 bolt carrier group (USA made)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 14pt;\"\u003eStandard charging handle\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 14pt;\"\u003eEjection port\/dust cover assembly\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 14pt;\"\u003eForward assist assembly\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 14pt;\"\u003e16” .223\/5.56 carbine barrel 1:8 twist (USA made)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 14pt;\"\u003e1\/2 x 28 thread pitch\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 14pt;\"\u003eCarbine length gas tube\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 14pt;\"\u003e0.750 gas port\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 14pt;\"\u003eLow profile gas block - steel\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 14pt;\"\u003eMuzzle brake (birdcage design)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 14pt;\"\u003e7 2-piece drop-in quad rail\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 14pt;\"\u003eM4 feed ramps\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 14pt;\"\u003eDelta ring assembly\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 14pt;\"\u003eHandguard cap\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 14pt;\"\u003e6-position buttstock with swivel\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 14pt;\"\u003eMil-Spec buffer tube\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 14pt;\"\u003eBuffer spring\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 14pt;\"\u003e3.0 oz. buffer\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 14pt;\"\u003eSteel end plate\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 14pt;\"\u003eSteel castle nut\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 14pt;\"\u003eLower parts kit (USA made)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 14pt;\"\u003eA2 pistol grip (style may vary)\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003e\u003cstrong\u003eDOES NOT INCLUDE LOWER RECEIVER\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003e\u003cstrong\u003e\u003cspan style=\"background-color: #ffff00;\"\u003eDISCLAIMER:\u003c\/span\u003e\u003c\/strong\u003e Parts kits are subject to state-specific shipping restrictions and cannot be shipped to California, Connecticut, Hawaii, Illinois, Maryland, Massachusetts, New Jersey, New York, or Washington. Please visit \u003ca href=\"\/shipping-restrictions\/\" target=\"_blank\"\u003eour shipping restrictions page\u003c\/a\u003e to review all applicable restrictions for your state. Subject to change.\u003c\/span\u003e\u003c\/p\u003e","brand":"USA","offers":[{"title":"Default Title","offer_id":52668624634178,"sku":"KIT0034","price":351.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0997\/7921\/5682\/files\/getimage__52388.1697569088.1280.1280.jpg?v=1774274301","url":"https:\/\/centerfiresystems.com\/products\/ar-15-m4-223556-unassembled-basic-rifle-build-kit-with-16-barrel-bolt-carrier-lpk-kit0034","provider":"Centerfire Systems","version":"1.0","type":"link"}