Radian Weapons AX556 Billet Upper/Lower Receiver Set 17" Handguard - Brown

AX556 Billet Upper/Lower Receiver Set 17" Handguard - Brown

The Radian AX556 Billet Upper/Lower Set offers elite-level craftsmanship, fully ambidextrous controls, and a precision-engineered foundation for serious shooters. Finished in Brown Cerakote, this semi-automatic 5.56 NATO/.223 Remington set provides tight tolerances, premium materials, and ergonomic enhancements to maximize efficiency for both left- and right-handed users.

Every Model 1 build is hand-assembled, test-fired, and inspected, ensuring combat-proven reliability and flawless performance in tactical, competition, or duty applications. With an extended 17” M-LOK handguard, this platform is ready for precision setups, long-range optimization, and accessory flexibility.

Billet Upper & Lower Receivers
CNC-machined for maximum durability, precision, and strength.

Fully Ambidextrous Controls
Includes bolt catch/release, magazine release, and safety selector, ensuring smooth operation regardless of shooting stance.

Raptor-SD Ambidextrous Charging Handle
Designed for optimal suppressed use and seamless manipulation.

Radian Talon 45/90 Safety Selector
User-configurable safety throw for either 45-degree quick access or 90-degree standard engagement.

17" M-LOK Handguard
Extended rail space for maximum accessory mounting and optimal rifle balance.

Brown Cerakote Finish
Rugged, corrosion-resistant coating for enhanced wear resistance.

Lightweight Forward Assist & Anti-Rotation Pins
Minimizes unnecessary weight while maintaining reliability.

Aluminum Barrel Nut & Barrel Nut Wrench Included
Ensures secure barrel fitment and hassle-free installation.

Hand-Inspected & Test-Fired
Guaranteed for life.

Specifications

• Caliber: 5.56 NATO / .223 Remington
• Receiver Material: Billet Aluminum
• Finish: Brown Cerakote
• Handguard: 17" M-LOK Modular Interface
• Safety Selector: Radian Talon Ambidextrous (45/90 Configurable)
• Charging Handle: Radian Raptor-SD Ambidextrous
• Bolt Catch & Release: Fully Ambidextrous
• Magazine Release: Fully Ambidextrous
• Included Hardware:
  • Aluminum Barrel Nut & Barrel Nut Wrench
  • Enhanced Takedown Pin Set
  • Hand Guard Cross Bolts, Washers & Nuts