Radian Weapons 14.5" Upper Receiver 6mm ARC – AR-15 Platform

The Radian Weapons 14.5" upper receiver assembly is chambered in 6mm ARC, a cartridge optimized for extended-range precision while maintaining compatibility with standard AR-15 lower receivers. This configuration bridges intermediate and long-range applications, offering superior ballistic performance over 5.56 NATO in a familiar platform. The 14.5" barrel length balances velocity retention with maneuverability for field use.

Manufactured from 7075-T6 aluminum with a Type III hard-coat anodized finish in black, this upper features Radian's precision machining standards throughout. The assembly includes a pinned gas block and gas tube for reliable operation with 6mm ARC pressures. Installation requires no gunsmithing—mounts directly to mil-spec AR-15 lower receivers. Verify your lower is compatible with 6.5 Grendel-style magazines, as 6mm ARC uses the same bolt face and magazine pattern.

• Caliber: 6mm ARC
• Type: Complete Upper Receiver Assembly
• Compatible Lower: AR-15 (mil-spec, requires 6.5 Grendel magazine compatibility)
• Barrel Length: 14.5"
• Material: 7075-T6 Aluminum
• Finish: Type III Hard-Coat Anodized Black
• Includes: Barrel, Gas System, Upper Receiver
• Installation: Drop-in, no gunsmithing required