• Radian Model 1 Complete Upper Receiver 18" 6mm ARC Billet 7075-T6 M-LOK
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Radian Weapons

Radian Model 1 Complete Upper Receiver 18" 6mm ARC Billet 7075-T6 M-LOK

Radian Model 1 Complete Upper Receiver 18" 6mm ARC Billet 7075-T6 M-LOK

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The Radian Model 1 Complete Upper Receiver pairs an 18-inch 6mm ARC barrel with a billet machined 7075-T6 upper receiver and M4 feed ramps, giving shooters a precision-built assembly for long-range and tactical use. The 1:7 twist barrel uses a 5/8x24 thread pitch, and the proprietary extended aluminum handguard carries the Magpul M-LOK modular mounting system for accessories.

Each unit is hand-assembled by trained gunsmiths, then individually inspected, test fired and cleaned. Fully ambidextrous controls include the Raptor-SD suppressor-optimized charging handle, and the enhanced black nitride M16 bolt carrier group runs on a direct impingement gas system. A Cerakote finish adds durability and corrosion resistance, and the assembly carries a sub-MOA accuracy guarantee with Black Hills Match Grade ammunition plus a lifetime guarantee from Radian.

Key Features

Brand Radian Weapons
Product Type Complete Upper Receiver
Model Model 1
Caliber 6mm ARC
Barrel Length 18"
Barrel Twist Rate 1:7
Muzzle Thread Pitch 5/8x24
Upper Receiver Material Billet 7075-T6 Aluminum
Feed Ramps M4
Handguard Proprietary Extended Aluminum with Magpul M-LOK
Bolt Carrier Group Enhanced Black Nitride M16
Charging Handle Radian Raptor-SD Ambidextrous, Suppressor-Optimized
Gas System Direct Impingement
Finish Cerakote
Condition New

Highlights

  • 18" barrel chambered in 6mm ARC with 1:7 twist and 5/8x24 thread pitch
  • Billet machined 7075-T6 upper receiver with M4 feed ramps
  • Proprietary extended aluminum handguard with Magpul M-LOK mounting
  • Enhanced black nitride M16 bolt carrier group
  • Radian Raptor-SD suppressor-optimized ambidextrous charging handle
  • Cerakote finish for durability and corrosion resistance
  • Direct impingement gas system
  • Sub-MOA accuracy guarantee with Black Hills Match Grade ammunition

Compatibility

The upper is chambered in 6mm ARC and uses a 5/8x24 muzzle thread pitch. The handguard accepts Magpul M-LOK modular accessories, and the Raptor-SD charging handle is optimized for suppressor use.

Warranty

Lifetime guarantee from Radian

Frequently asked questions

What ammunition is the sub-MOA accuracy guarantee rated with?

The sub-MOA accuracy guarantee applies when using Black Hills Match Grade ammunition.

What is the barrel twist rate and muzzle thread pitch?

The 18-inch 6mm ARC barrel has a 1:7 twist rate and a 5/8x24 muzzle thread pitch.

What charging handle and bolt carrier group are included?

It includes a Radian Raptor-SD suppressor-optimized ambidextrous charging handle and an enhanced black nitride M16 bolt carrier group.

What warranty covers this upper receiver?

Radian provides a lifetime guarantee on the Model 1 Complete Upper Receiver.

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