Rise Armament RA6ARCCUGRY18 | 6 ARC | 18″

The Rise Armament RA6ARCCUGRY18 is an AR-15 upper receiver designed around an exceptionally accurate 18-inch 416R stainless steel threaded barrel chambered in 6 ARC. It pairs the precision potential of a long, match-oriented barrel with the modularity of the AR-15 platform. This upper is intended for precision target applications and long-range varmint or small-predator work where the 6 ARC cartridge is appropriate.

Product Specifications

• The manufacturer is listed as Rise Armament.
• The model/part number is RA6ARCCUGRY18.
• The caliber is specified as 6 ARC.
• The component is an AR-15 upper receiver.
• The barrel measures 18 inches for extended-velocity performance.
• The barrel material is specified as 416R stainless steel.
• The barrel is described as threaded to accept muzzle devices or accessories where legal and appropriate.
• The twist rate is listed as 1:7″.
• The product name indicates the upper receiver material as aluminum.
• The action attribute is recorded as 6 ARC.
• The UPC for this item is 850043415961.

This upper combines a long, match-oriented 18″ 416R stainless barrel with AR-15 compatibility to give shooters a stable, predictable platform for precision work. The threaded barrel and AR-15 form factor make it adaptable for optics, muzzle devices, and different handguard/receiving assemblies. For shooters seeking a purpose-built upper for precision target work or extended-range field use with the 6 ARC cartridge, this Rise Armament upper offers a focused solution without unnecessary extras.