Rise Armament RA-6ARC-CU-BRN-18 Upper Receiver
Rise Armament complete upper receiver in 6mm ARC with 18" stainless steel barrel, 1:7 twist, rifle-length gas system, and free-float M-LOK handguard.
Rise Armament 6mm ARC Complete Upper Receiver
The Rise Armament RA-6ARC-CU-BRN-18 represents a thoughtfully engineered upper receiver assembly designed for shooters seeking precision and reliability in the increasingly popular 6mm ARC cartridge.
Key Features
- Barrel: 18-inch 416R stainless steel with 1:7 twist rate and 1/2x28 threading
- Gas System: Rifle-length configuration for optimal reliability and reduced recoil impulse
- Handguard: 15.25-inch free-float M-LOK rail system for accessory mounting and improved accuracy
- Bolt Carrier Group: Black nitride finish for enhanced durability and corrosion resistance
- Charging Handle: Ambidextrous design for shooter convenience
- Finish: Patriot Brown Cerakote coating for distinctive appearance and protection
Why This Upper Matters
The 6mm ARC has earned respect among precision shooters for its ballistic efficiency and moderate recoil. This complete upper assembly eliminates the guesswork of component selection—everything is properly matched and tested for function. The stainless steel barrel provides excellent accuracy potential, while the free-float handguard isolates the barrel from external pressure that can degrade precision.
Whether you're building your first AR-15 or adding to an existing collection, this upper receiver delivers the quality and performance Rise Armament is known for.
Features
- forged billet aluminum receiver
- 6mm arc
- 18 1:7 twist 416r stainless steel barrel"
- 1/2x28 threaded
- rifle length gas system
- 15.25 free float m-lok handguard"
- rise ambidextrous charging handle
- black nitride blot carrier group
- patriot brown cerakote finish
