Rise Armament RA6ARCCUGRY18 Upper Receiver 6 ARC 18" Grey Cerakote Barrel Aluminum

The Rise Armament RA6ARCCUGRY18 Upper Receiver in 6 ARC with 18-inch grey Cerakote barrel is engineered for precision shooters and tactical builders seeking a lightweight, corrosion-resistant platform. This aluminum upper receiver delivers the ballistic efficiency of the 6mm ARC cartridge—a modern intermediate round optimized for subsonic and supersonic accuracy at extended ranges—paired with durable grey Cerakote coating that withstands harsh field conditions and saltwater environments.

Weighing 5.89 pounds, this upper assembly prioritizes maneuverability without compromising structural integrity or repeatability. The 18-inch barrel length balances velocity optimization with handling characteristics—a proven configuration for both precision rifle work and dynamic shooting applications. Rise Armament's aluminum construction maintains tight tolerances essential for maintaining zero through extended range sessions, while the grey Cerakote finish resists wear, corrosion, and UV degradation far more effectively than standard blued or anodized surfaces. These specifications make the RA6ARCCUGRY18 a dependable choice for AR platform builds where weight savings and long-range accuracy are priorities.

This upper receiver suits precision hunters, competition shooters, and tactical professionals building custom rifles around the 6 ARC cartridge. The 6mm ARC gains traction in precision communities for its ballistic efficiency and lower recoil compared to larger calibers, making it ideal for shooters prioritizing follow-up accuracy and energy retention at distance. Whether assembling a dedicated precision build or upgrading an existing platform, operators benefit from the proven reliability of Rise Armament's manufacturing and the practical advantages of Cerakote protection in field-intensive environments.