Rise Armament Complete Upper 6mm ARC 18″

The Rise Armament complete upper receiver is built for the AR-15 platform and chambered in 6mm ARC. It includes an 18-inch 416R stainless steel threaded barrel with a 1:7 rate of twist and a Black Cerakote barrel finish. The assembly features an M-LOK handguard and a Patriot Brown exterior finish for a purposeful, field-ready configuration.

Key Specifications

• The caliber is 6mm ARC.
• The barrel measures 18 inches for extended-range performance.
• The barrel is made from 416R stainless steel and is threaded.
• The barrel finish is Black Cerakote.
• The twist rate is 1:7.
• The handguard utilizes M-LOK attachment points.
• The exterior finish/color is Patriot Brown.
• The unit is a Complete Upper Receiver.
• Product classification: Complete Upper Receivers.
• Includes a threaded barrel for muzzle device compatibility.

This Rise Armament upper provides a precision-oriented, factory-built option for AR-15 users seeking a complete, long-barrel configuration in 6mm ARC. With a stainless threaded barrel, 1:7 twist, and M-LOK compatibility, it is well suited for precision and extended-range applications while maintaining practical field ergonomics and mounting options.