Radian Weapons AX556 Billet Receiver Set – 5.56 NATO/.223 Rem, Ambidextrous, Cerakote Black, Includes 15.5" M-LOK® Handguard & Talon™ Safety (R0403)

Model/SKU: R0403 • UPC: 817093022532
Platform: AR-15 • Caliber Compatibility: 5.56 NATO / .223 Remington • Configuration: Billet upper/lower set with integral ambidextrous controls • Finish: Cerakote® Black • Included: Radian Talon™ ambidextrous safety, hammer pin, 15.5" M-LOK® handguard

Build a flagship-grade AR with the receiver system serious shooters prefer. The Radian Weapons AX556 is a meticulously machined billet upper and lower set that integrates Radian’s renowned ambidextrous manual of arms, delivering speed, redundancy, and control from either shoulder. Finished in a durable Cerakote® Black, the AX556 ships ready for your premium parts kit and includes a Radian Talon™ ambidextrous safety, hammer pin, and an extended 15.5" M-LOK® free-float handguard—a turnkey core for precision, duty, or defensive builds in 5.56 NATO/.223 Rem.

Why Builders Choose the AX556

• True ambidexterity built-in: Mirrored controls for safety, mag release, and bolt catch/release streamline reloads, lock-backs, and malfunction clears whether you’re right- or left-handed—or switching shoulders around barricades.

• Billet precision & rigidity: CNC machined from quality 7075-T6 aluminum (receiver set), the AX556 delivers tight tolerances, superior fit, and a consistent bedding surface for accuracy-focused builds.

• Pro-level ergonomics: Enhanced magazine well geometry, flared magwell, and clean control placement reduce fumbles and speed up reps under timer or stress.

• Duty-tough finish: Cerakote® Black resists abrasion, solvents, sweat, and weather, maintaining a professional, low-glare appearance.

• Handguard included: The slim 15.5" M-LOK® free-float rail maximizes sight radius and accessory real estate while preserving barrel harmonics for better precision.

• Premium components in the box: The Radian Talon™ safety (45°/90° configurable) and hammer pin simplify parts sourcing and align with Radian’s quality standard.

Key Features at a Glance

• Receiver Set: AX556 billet upper & lower, precision-fit, Cerakote® Black

• Ambi Controls: Safety selector, mag release, bolt catch/release on both sides

• Included Parts: Radian Talon™ ambi safety, hammer pin, 15.5" M-LOK® free-float handguard

• Caliber Family: 5.56 NATO / .223 Rem (standard AR-15 pattern components)

• Interface: 1913 Picatinny top rail on the upper; full-length M-LOK® slots on handguard (3, 6, 9 o’clock)

• Compatibility: Accepts quality AR-15 barrels, BCGs, triggers, stocks/braces (where legal), and standard small parts

• Model / UPC: R0403 / 817093022532

Performance You Can Feel

• Faster reloads & clears: Intuitive ambi layout allows bolt lock, bolt release, and mag swaps with either hand—fewer grip breaks, tighter shot-to-shot cadence.

• Enhanced precision potential: Rigid billet receivers and a true free-float rail reduce POI shifts from grip pressure and accessories.

• Cleaner setup: The included 15.5" rail supports modern, forward-biased grips, lights, QD sling cups, laser modules, and bipods without clutter.

Ideal Builds & Use Cases

• Duty/defense: Ambi redundancy and robust finish for professional applications (follow all local laws).

• Competition & training: Speed-friendly control layout and extended rail for barricade and positional work.

• Precision carbine: Pair with a match barrel/trigger for repeatable sub-MOA potential with quality ammo.

• Left-handed shooters: Native ambi controls eliminate workarounds and add confidence.

Build Tips (Get the Most from Your AX556)

1. Barrel & gas system: Choose a quality, properly headspaced barrel/bolt; verify gas length and porting for your intended ammo.

2. Trigger interface: The AX556 pairs beautifully with premium single- or two-stage triggers; confirm pin size and torque to spec.

3. Mounting optics: The continuous Pic rail supports red dots + magnifiers or LPVOs; confirm mount height for your cheek weld.

4. Torque & threadlocker: Use manufacturer torque values on handguard/receiver screws; apply blue threadlocker and witness mark.

5. Compliance note: Firearm laws vary by state—verify current regulations before assembly, configuration, and use.

Specifications (Summary)

• Brand: Radian Weapons

• Product: AX556 Billet Upper/Lower Set

• Finish: Cerakote® Black

• Caliber Pattern: 5.56 NATO / .223 Remington (AR-15)

• Controls: Fully ambidextrous (safety, mag release, bolt catch/release)

• Included: Radian Talon™ ambi safety, hammer pin, 15.5" M-LOK® handguard

• Handguard: 15.5" free-float, M-LOK® slots, slim profile

• Model / UPC: R0403 / 817093022532

SEO Highlights (What Shoppers Search)

• Radian AX556 billet receiver set ambidextrous

• Cerakote black AR-15 upper/lower with 15.5" M-LOK handguard

• R0403 817093022532 Radian ambi lower

• Radian Talon ambidextrous safety included

• Premium AR-15 ambidextrous controls 5.56/.223

Meta Title (SEO)

Radian Weapons AX556 Billet Upper/Lower – Ambidextrous, Cerakote Black, 15.5" M-LOK Handguard & Talon Safety | R0403 | UPC 817093022532

Meta Description (SEO)

Build a flagship AR with the Radian AX556 billet receiver set. Fully ambidextrous controls, Cerakote Black finish, includes 15.5" M-LOK handguard, Radian Talon ambi safety, and hammer pin. Model R0403, UPC 817093022532.

Structured Data (JSON-LD)

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**Ambi mastery, billet precision, and mission-ready durability—**the Radian Weapons AX556 (R0403) is the premium receiver foundation your next 5.56/.223 build deserves. The End