{"product_id":"rise-armament-ar-15-complete-upper-6mm-arc-18-1-7-twist-black-cerakote","title":"Rise Armament AR-15 Complete Upper 6mm ARC 18\" 1:7 Twist - Black Cerakote","description":"\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eThe \u003cstrong\u003e\u003cspan style=\"background-color: #ffff00;\"\u003eRise Armament RA6ARCCUBRN18\u003c\/span\u003e\u003c\/strong\u003e is a complete \u003cstrong\u003eAR-15 upper receiver\u003c\/strong\u003e chambered in \u003cstrong\u003e\u003cspan style=\"background-color: #ffff00;\"\u003e6mm ARC\u003c\/span\u003e\u003c\/strong\u003e, built around an exceptionally accurate \u003cstrong\u003e18-inch 416R stainless steel barrel\u003c\/strong\u003e finished in \u003cstrong\u003e\u003cspan style=\"background-color: #ffff00;\"\u003eBlack Cerakote\u003c\/span\u003e\u003c\/strong\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eDesigned for precision performance at extended ranges, this upper features a \u003cstrong\u003e1:7 twist\u003c\/strong\u003e optimized to stabilize heavier 6mm ARC projectiles. The barrel is threaded \u003cstrong\u003e1\/2x28\u003c\/strong\u003e for compatibility with a wide range of standard muzzle devices and is paired with a \u003cstrong\u003erifle-length gas system\u003c\/strong\u003e for smooth, reliable cycling with the full spectrum of 6mm ARC factory ammunition.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eThe upper ships with a \u003cstrong\u003e15.25-inch free-float M-LOK handguard\u003c\/strong\u003e machined from \u003cstrong\u003ealuminum\u003c\/strong\u003e, giving the platform a sturdy, accessory-ready mounting surface and full-length free-float barrel support. M-LOK slots along the handguard accept lights, lasers, grips, bipods, and other accessories directly without removing the handguard.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eDrop this complete upper onto any standard mil-spec AR-15 lower to add a hard-hitting 6mm ARC capable rifle to your lineup without sourcing or headspacing individual components. It is well suited for long-range training, predator hunting, and precision AR-15 builds.\u003c\/span\u003e\u003c\/p\u003e","brand":"Rise Armament","offers":[{"title":"Default Title","offer_id":55047349436738,"sku":"177602","price":880.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0997\/7921\/5682\/files\/hires_f0cbc674-4eef-4e21-aee3-53d62225415d.png?v=1784700006","url":"https:\/\/centerfiresystems.com\/products\/rise-armament-ar-15-complete-upper-6mm-arc-18-1-7-twist-black-cerakote","provider":"Centerfire Systems","version":"1.0","type":"link"}