Radian Weapons RADIAN Upper 18″ 6mm ARC Olive Drab Green

The Radian Weapons RADIAN Upper is a complete AR-15 upper built for precision-oriented applications. Chambered in 6mm ARC with an 18" barrel and a 1:7 twist, it is intended for shooters who prioritize accuracy and modularity. The Olive Drab Green Cerakote finish and M-LOK handguard deliver durable protection and flexible accessory options.

Key Specifications

• This is a Complete Upper Receiver intended for AR-15 platforms.
• Manufacturer is Radian Weapons.
• Model designation is RADIAN Upper.
• Chambering is 6mm ARC.
• The barrel measures 18" in length.
• Barrel twist rate is listed as 1:7.
• Finish is Cerakote Olive Drab Green.
• Handguard type is M-LOK.
• Fitment is for the AR-15 platform.
• Included accessory: Handguard.

Built and finished to exacting standards, the RADIAN Upper offers a ready-to-install solution for a 6mm ARC AR-15 build where accuracy and durability matter. Its combination of an 18" barrel, 1:7 twist, and M-LOK accessory compatibility provides a practical foundation for shooters seeking a high-quality upper receiver that supports modular setups and consistent performance.