{"product_id":"rise-armament-ra-22arc-22-arc-18-1-7-twist-complete-upper-gray-anodized","title":"Rise Armament RA-22ARC 22 ARC 18\" 1:7 Twist Complete Upper - Gray Anodized","description":"\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eThe \u003cstrong\u003e\u003cspan style=\"background-color: #ffff00;\"\u003eRise Armament RA-22ARC\u003c\/span\u003e\u003c\/strong\u003e complete upper receiver drops onto any MIL-SPEC AR-15 lower and delivers a dedicated \u003cstrong\u003e\u003cspan style=\"background-color: #ffff00;\"\u003e22 ARC\u003c\/span\u003e\u003c\/strong\u003e chambering in a precision-built package. The upper receiver is machined from \u003cstrong\u003eforged billet aluminum\u003c\/strong\u003e and finished in a hardcoat \u003cstrong\u003egray anodized\u003c\/strong\u003e coating for long-lasting corrosion resistance.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eAt the heart of the build is an \u003cstrong\u003e18\" 416R stainless steel barrel\u003c\/strong\u003e that is \u003cstrong\u003ebutton-rifled, air-gauged, and tested\u003c\/strong\u003e for consistent bore dimensions. A fast \u003cstrong\u003e1:7 twist\u003c\/strong\u003e rate stabilizes modern high-BC .22-caliber projectiles, and the muzzle is threaded \u003cstrong\u003e1\/2x28\u003c\/strong\u003e for standard AR-15 muzzle devices.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eA \u003cstrong\u003efree-floating skeletonized aluminum handguard\u003c\/strong\u003e surrounds the barrel and provides a continuous \u003cstrong\u003e12 o'clock Picatinny rail\u003c\/strong\u003e for optics, with M-LOK slots along the sides and bottom for accessories. The \u003cstrong\u003erifle-length gas system\u003c\/strong\u003e is tuned to keep cycling smooth and reliable across a wide variety of 22 ARC loads.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eThe upper ships \u003cstrong\u003efully assembled\u003c\/strong\u003e with a premium \u003cstrong\u003ebolt carrier group\u003c\/strong\u003e and an \u003cstrong\u003eambidextrous charging handle\u003c\/strong\u003e included, so mating it to your AR-15 lower is the only step required to get on target. The serialized lower receiver is not included.\u003c\/span\u003e\u003c\/p\u003e","brand":"Rise Armament","offers":[{"title":"Default Title","offer_id":55108279664962,"sku":"177598","price":880.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0997\/7921\/5682\/files\/hires_2cd3fba1-5bb5-48e5-91b0-673d2c7d1ac9.png?v=1784801791","url":"https:\/\/centerfiresystems.com\/products\/rise-armament-ra-22arc-22-arc-18-1-7-twist-complete-upper-gray-anodized","provider":"Centerfire Systems","version":"1.0","type":"link"}