RADN R0406 15.5 FDE Rifle

The Radian Weapons R0406 15.5 FDE Rifle is a purpose-built, mid-length platform engineered for operators who demand reliability in close-quarters and intermediate-range engagements. Designed around a 15.5-inch barrel, this rifle bridges the gap between carbine maneuverability and rifle-length sight radius, making it ideal for tactical professionals, law enforcement, and serious civilian shooters. The flat dark earth (FDE) finish provides a modern aesthetic while offering superior corrosion resistance compared to parkerized alternatives, and the compact footprint—12.5 inches in length—delivers exceptional balance and control without sacrificing velocity or accuracy.

Built on Radian Weapons' proven direct impingement design, the R0406 combines precision machining with field-proven ergonomics to ensure consistent lock-up and minimal point-of-aim shift over extended fire cycles. The 15.5-inch barrel length optimizes velocity while maintaining a gas system dwell time that reduces carrier tilt and extends component life—a critical consideration in duty-rated platforms. At 5.82 pounds, the rifle achieves a weight distribution that minimizes fatigue during prolonged operations without sacrificing structural rigidity. The FDE anodized receiver finish integrates seamlessly with modern tactical furniture and resists salt spray and chemical exposure, essential for operators working in harsh environments.

Law enforcement agencies, military support personnel, and competitive shooters benefit most from this configuration, particularly those operating in vehicle-mounted roles or confined-space environments where traditional 16-inch platforms prove unwieldy. The R0406 accepts standard 5.56 NATO ammunition and integrates with AR-15 pattern optics, foregrips, and accessories, ensuring compatibility with existing duty gear and personal setups. Installation of mission-critical components—suppressors, rail systems, or specialized sights—is straightforward on the flat-top upper receiver, allowing rapid customization to meet evolving tactical requirements without the need for specialized tools or gunsmith intervention.