The Radian Weapons Radian Upper 18" 6mm ARC Gray pairs precision engineering with a sleek, extended profile to deliver a complete upper that feels refined yet purpose built. Centered around an 18" barrel chambered in 6mm ARC and capped with a threaded muzzle device, this Model 1 upper uses a billet machined 7075-T6 receiver and a proprietary extended M-LOK handguard to create a rigid, lightweight shooting platform.

This complete upper is ideal for precision-focused range work, practical competition, and hunting where flat trajectories and repeatable accuracy matter. The rifle-length gas system, Radian Raptor-SD charging handle, and enhanced bolt carrier group work together for smooth cycling and consistent performance, while the gray Cerakote finish offers added durability. Shooters who value ambidextrous-friendly design and meticulous assembly will appreciate Radian’s reputation for careful craftsmanship and attention to detail.

Key Features:

• Manufacturer: Radian Weapons
• Model: Radian Model 1 Complete Upper 18" 6mm ARC Gray
• Caliber: 6mm ARC
• Barrel Length: 18"
• Gas System: Rifle-Length
• Handguard: 17" M-LOK Extended Handguard
• Charging Handle: Radian Raptor-SD Ambidextrous Charging Handle
• Bolt Carrier Group: Enhanced Black Nitride M16 Bolt Carrier Group
• Thread Pitch: 5/8x24
• Finish Color: Gray Cerakote