Rise Armament RA6ARCCUGRY18 Upper Receiver 6 ARC 18″

The Rise Armament RA6ARCCUGRY18 upper receiver is designed for the 6mm ARC cartridge and for installation on AR-15 platform rifles. It pairs an 18-inch 416R stainless steel threaded barrel with a Cerakote finish and an aluminum receiver. The assembly's 1:7 rate of twist supports stabilization for a broad range of 6mm ARC projectiles.

Key Specifications

• Manufacturer: Rise Armament.
• Model: RA6ARCCUGRY18 Upper Receiver.
• Caliber: 6 ARC.
• The barrel measures 18 inches for extended velocity and range.
• Barrel material is 416R stainless steel for corrosion resistance.
• The barrel is threaded to accept muzzle devices or accessories.
• The barrel twist rate is 1:7.
• Receiver construction is aluminum.
• Application: AR-15 upper receiver for precision-oriented builds.

With a long stainless barrel and a 1:7 twist, this Rise Armament upper provides a stable foundation for precision 6mm ARC shooting. Its threaded 18-inch barrel and aluminum receiver are suited to match and long-range AR-15 configurations where consistency and barrel life are priorities.