{"product_id":"rise-cmplt-uppr-6mm-arc-18-black","title":"Rise Armament Complete Upper 6mm ARC 18\" – AR-15 Platform","description":"\u003cp\u003eThe Rise Armament Complete Upper in 6mm ARC is a precision-oriented upper receiver assembly designed for AR-15 lower receivers. Chambered in 6mm ARC, this 18-inch configuration delivers excellent ballistic performance for mid-range precision shooting and hunting applications where higher BC projectiles and improved wind performance matter. The upper comes fully assembled and ready to install on any mil-spec AR-15 lower.\u003c\/p\u003e\u003cp\u003eConstructed with a forged aluminum upper receiver and finished in black, this complete upper includes the barrel, bolt carrier group, charging handle, and handguard. The 18-inch barrel length optimizes velocity for the 6mm ARC cartridge while maintaining reasonable overall length. Installation requires only standard AR-15 takedown pins—no gunsmithing or additional parts needed.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCaliber:\u003c\/strong\u003e 6mm ARC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Complete Upper Receiver Assembly\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Lower:\u003c\/strong\u003e AR-15 \/ Mil-Spec\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBarrel Length:\u003c\/strong\u003e 18\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Forged Aluminum Receiver\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Black\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes:\u003c\/strong\u003e Barrel, BCG, Charging Handle, Handguard\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation:\u003c\/strong\u003e Drop-in for Mil-Spec AR-15 Lowers\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Rise Armament","offers":[{"title":"Default Title","offer_id":47939602940159,"sku":"RISERA-6ARC-CU-BLK-18","price":1006.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/0434\/3807\/files\/5212441.jpg?v=1766544784","url":"https:\/\/doublestackstore.com\/products\/rise-cmplt-uppr-6mm-arc-18-black","provider":"Double Stack Store","version":"1.0","type":"link"}