Rise Armament RA6ARCCUGRY18 Upper Receiver 6 ARC 18-inch

Description

The Rise Armament RA6ARCCUGRY18 is an AR-style upper receiver configured for the 6 ARC cartridge and fitted with an 18-inch 416R stainless steel threaded barrel. The assembly is presented as a complete upper receiver unit designed for accuracy at extended ranges while retaining AR-15 compatibility for standard upper/lower pairings where applicable. Finish and some naming details vary among the provided sources; see Key Specifications and notes for specifics that require review.

Key Specifications

• The caliber is 6 ARC.
• The barrel measures 18 inches and is threaded for muzzle devices or accessories.
• The barrel material is 416R stainless steel as described in the product text.
• Reported barrel finish is conflicting: Grey Cerakote and Black Cerakote across source fields.
• The action value listed is 6 ARC per the provided attribute data.
• The rate of twist is specified as 1:7.
• The product is marketed as an upper receiver assembly model RA6ARCCUGRY18.
• Image supplied shows the upper receiver and the installed 18-inch stainless barrel; image available.

This upper receiver is aimed at shooters who prioritize long-range precision from an AR-format platform and need a purpose-built 6 ARC barrel assembly. With a long threaded 416R stainless barrel and a configuration intended for accuracy, it serves well for precision-oriented applications where a durable stainless barrel and consistent twist rate are important considerations. Review the listed specifications and finish reports to ensure the configuration matches your requirements before purchase.

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