Rise Armament 6mm ARC Upper Receiver – 18″ Grey Cerakote Stainless Barrel

Elevate your AR-15 platform with the Rise Armament RA-6ARC Upper Receiver, purpose-built for precision shooters who demand long-range performance without sacrificing versatility. Chambered in 6mm ARC (Advanced Rifle Cartridge), this upper delivers exceptional ballistic efficiency in a familiar AR-15 package — making it an ideal choice for hunters, competitive shooters, and serious enthusiasts alike.

At its core is an 18-inch 416R stainless steel barrel finished in a durable grey Cerakote coating, offering superior corrosion resistance and a clean, tactical aesthetic. The threaded muzzle allows for easy attachment of muzzle devices, suppressors, or compensators to suit your preferred shooting setup. The upper receiver is crafted from quality aluminum, keeping weight manageable while maintaining structural integrity under repeated use.

Whether you’re building a precision long-range rifle or upgrading an existing AR-15, the Rise Armament 6mm ARC upper is a drop-in solution engineered for consistency and accuracy out of the box.

Order online through Deep Roots Rifle Co for fast shipping nationwide, or stop by our Eustis, Florida gun store to speak with our knowledgeable staff about this upper and other custom build options. We carry hard-to-find components and offer expert guidance to help you complete your ideal build.