Radian Weapons R0406 Model 1 Builder Kit 15.5″ M-LOK Handguard

The Radian Weapons R0406 Model 1 Builder Kit provides a comprehensive set of components for assembling an AR-style rifle. The package centers on a billet upper receiver and a 15.50" Magpul M-LOK handguard finished in Flat Dark Earth. Included ambidextrous controls and installation hardware simplify build work for experienced assemblers and hobbyist builders alike.

Key Specifications

• The kit is identified as R0406 Model 1 Builder Kit.
• The handguard measures 15.50 inches and uses a Magpul M-LOK attachment interface.
• Caliber is listed as Multi-Caliber.
• Handguard finish is Flat Dark Earth (FDE).
• Includes a billet upper receiver with dust cover, anti-rotation pin, and lightweight forward assist installed.
• Includes a Radian AX556 lower receiver.
• Includes a Raptor-SD ambidextrous charging handle.
• Includes a Radian Talon 45/90 ambidextrous safety selector.
• Includes an ambidextrous bolt catch & release and an ambidextrous magazine release.
• Supplies mounting hardware including an aluminum barrel nut, barrel nut wrench, and 4 hand guard cross bolts with washers and nuts.

This builder kit groups quality components and ambidextrous controls into a single package intended for methodical assembly and customization. Its Magpul M-LOK handguard and complete hardware selection make it a practical choice for builders who prefer a conservative, parts-first approach to constructing an AR-style rifle for precision applications and general purpose use.