{"product_id":"rra-cmptl-rrage-3g-upr-5-56nato-16","title":"Rock River Arms RRAGE 3G Complete Upper 5.56 NATO 16\" – AR-15 Compatible","description":"\u003cp\u003eThe Rock River Arms RRAGE 3G Complete Upper is a factory-assembled 5.56 NATO upper receiver designed to drop onto any mil-spec AR-15 lower. This 16-inch configuration delivers practical carbine length for general-purpose shooting, home defense, or range work. The RRAGE 3G series represents Rock River's value-oriented platform while maintaining the company's manufacturing standards.\u003c\/p\u003e\u003cp\u003eThis complete upper arrives ready to install with no additional parts required. The forged aluminum upper receiver is paired with a 16-inch chromoly barrel and features a low-profile gas block for compatibility with free-float handguards. The carbine-length gas system provides reliable cycling with standard 5.56 NATO and .223 Remington ammunition. Finish is standard black oxide. Installation requires only basic armorer tools and familiarity with AR-15 assembly.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCaliber:\u003c\/strong\u003e 5.56 NATO \/ .223 Remington\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Complete Upper Receiver\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Lower:\u003c\/strong\u003e Mil-spec AR-15\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBarrel Length:\u003c\/strong\u003e 16 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Forged aluminum upper, chromoly barrel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Black oxide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes:\u003c\/strong\u003e Upper receiver, barrel, gas system, handguard, charging handle, bolt carrier group\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation:\u003c\/strong\u003e Requires basic AR-15 assembly knowledge\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Rock River Arms","offers":[{"title":"Default Title","offer_id":47939773268223,"sku":"RRABB0470","price":538.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/0434\/3807\/files\/2950212.jpg?v=1766546513","url":"https:\/\/doublestackstore.com\/products\/rra-cmptl-rrage-3g-upr-5-56nato-16","provider":"Double Stack Store","version":"1.0","type":"link"}